(95 marks) To help find the velocity of particles requires the evaluation of the indefinite integral of the acceleration function, a(t), i.e. = fa(t) dt. Evaluate the following indefinite integrals. Check your value for each integral by differentiating your answer. (a) [2t 2t (45 cos 3t+16e-4t - 8 sin 2t) dt; (16 marks) (b) √ (32t³ – 12t) (In t)² dt; (26 marks) 5t5 +4e-3t+ 2 sin 6t (c) J (18 marks) √5t6-8e-3t-2 cos 6t+42 4-e-t (d) √ (e^² + 1) (e^² + 2) dt. (35 marks) V = dt;

Answers

Answer 1

These indefinite integrals can be checked by differentiating the obtained results to see if they match the original functions.

(a) To evaluate the indefinite integral ∫[2t,2t] (45cos(3t) + 16[tex]e^(-4t)[/tex] - 8sin(2t)) dt, we integrate term by term. The integral of 45cos(3t) is (45/3)sin(3t), the integral of 16[tex]e^(-4t)[/tex] is (-4)[tex]e^(-4t)[/tex], and the integral of -8sin(2t) is (-8/2)cos(2t). Combining these results, we get (15sin(3t) - 4[tex]e^(-4t)[/tex] + 4cos(2t)) + C, where C is the constant of integration.

(b) To evaluate the indefinite integral ∫√(32t³ - 12t)(ln(t))² dt, we use the substitution u = √(32t³ - 12t). This leads to du = (32√t - 6)/√(32t³ - 12t) dt. Substituting back, the integral becomes ∫(ln(t))²(32√t - 6) du. Expanding the integrand and integrating term by term, we get (32/5)(√(32t³ - 12t)ln(t))³ - (6/5)(√(32t³ - 12t)ln(t))² + C, where C is the constant of integration.

(c) To evaluate the indefinite integral ∫(5t⁵ + 4[tex]e^(-3t)[/tex] + 2sin(6t)) dt, we integrate each term separately. The integral of 5t⁵ is (5/6)t⁶, the integral of 4[tex]e^(-3t)[/tex] is (-4/3)[tex]e^(-3t)[/tex], and the integral of 2sin(6t) is (-2/6)cos(6t). Combining these results, we get (5/6)t⁶ - (4/3)[tex]e^(-3t)[/tex] - (1/3)cos(6t) + C, where C is the constant of integration.

(d) To evaluate the indefinite integral ∫√(5t⁶ - 8[tex]e^(-3t)[/tex] - 2cos(6t) + 42/(4 - [tex]e^(-t)[/tex])) dt, there is no elementary antiderivative for this expression. Therefore, we need to use numerical methods or approximations to find the integral value.

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Related Questions

One way of checking the effect of undercoverage, nonresponse, and other sources of bias in a sample survey is to compare the sample with known facts about the population. About 12% of American adults identify themselves as African American. Suppose we take an SRS of 1500 American adults and let X be the number of African Americans in the sample. 1. Calculate the mean and standard deviation of the sampling distribution of X. Interpret the standard deviation. 2. Justify that the sampling distribution of Xis approximately normal 3. Calculate the probability that an SRS of 1500 American adults will contain between 155 and 205 African Americans. 4. Explain how a polling organization could use the results from the previous question to check for undercoverage and other sources of bias.

Answers

Mean of the sampling distribution of X is 180 and the standard deviation is approximately 4.96, which represents the average variability in sample proportions. The sampling distribution of X is approximately normal due to the Central Limit Theorem. The probability that an SRS of 1500 American adults will contain between 155 and 205 African Americans can be calculated using the normal approximation to the binomial distribution. A polling organization can compare the observed proportion of African Americans in the sample with the known proportion to check for undercovering and other sources of bias, helping identify potential issues and improve sampling methodology.

To calculate the mean and standard deviation of the sampling distribution of X, we need to use the properties of a simple random sample (SRS). In an SRS, each individual has an equal chance of being selected.

Mean of the sampling distribution of X:

The mean of the sampling distribution of X is equal to the population proportion. In this case, the proportion of African Americans in the population is 0.12.

Mean = population proportion * sample size

Mean = 0.12 * 1500

Mean = 180

Therefore, the mean of the sampling distribution of X is 180.

Standard deviation of the sampling distribution of X:

The standard deviation of the sampling distribution of X is given by the formula:

Standard deviation = sqrt((population proportion * (1 - population proportion)) / sample size)

Standard deviation = sqrt((0.12 * (1 - 0.12)) / 1500)

Standard deviation ≈ 4.96

Interpretation of the standard deviation:

The standard deviation of the sampling distribution of X represents the average amount of variability or dispersion in the sample proportions that we would expect to see across different samples of the same size.

The sampling distribution of X is approximately normal due to the Central Limit Theorem (CLT). The CLT states that for a large enough sample size, regardless of the shape of the population distribution, the sampling distribution of the sample mean or proportion tends to follow a normal distribution.

To calculate the probability that an SRS of 1500 American adults will contain between 155 and 205 African Americans, we can use the normal approximation to the binomial distribution.

P(155 ≤ X ≤ 205) = P(X ≤ 205) - P(X ≤ 155)

Using the normal approximation, we can calculate the probability using the mean and standard deviation of the sampling distribution of X:

P(X ≤ 205) = P(Z ≤ (205 - 180) / 4.96)

P(X ≤ 205) ≈ P(Z ≤ 5.04)

Similarly, calculate P(X ≤ 155) using the same formula.

A polling organization can use the results from the previous question to check for undercoverage and other sources of bias by comparing the observed proportion of African Americans in the sample (based on the calculated probability) with the known proportion of 12% in the population. If the observed proportion significantly differs from 12%, it suggests the possibility of undercoverage or bias in the sample, indicating that certain groups might be underrepresented or overrepresented. This information can help identify potential sources of bias and improve the sampling methodology to obtain a more representative sample.

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Hw1: Problem 10 Previous Problem Problem List Next Problem (1 point) Let f(x) V1-and g(x) 16 f 32. Find f +g, f-9, 3.g, and and their respective domains g 1. f+9= 33 2. What is the domain of f+g? Answ

Answers

Given functions f(x) = V1 and g(x) = 16 f 32, we can find f + g, f - g, 3g, and the domain of f + g. The results are: f + g = V1 + 16 f 32, f - g = V1 - 16 f + 32, 3g = 3(16 f 32), and the domain of f + g is the intersection of the domains of f and g.

To find f + g, we simply add the two functions together. In this case, f + g = V1 + 16 f 32.

For f - g, we subtract g from f. Therefore, f - g = V1 - 16 f + 32.

To find 3g, we multiply g by 3. Hence, 3g = 3(16 f 32) = 48 f - 96.

The domain of f + g is determined by the intersection of the domains of f and g. Since the domain of f is the set of all real numbers and the domain of g is also the set of all real numbers, the domain of f + g is also the set of all real numbers. This means that there are no restrictions on the values that x can take for the function f + g.

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Can you show the calculation of a and b? a - 1 78 218-4 -4|| 5.5 3 42.5) 41 a=1.188 b=0.484 y=1.188+0.484x

Answers

Using any suitable method (substitution or elimination), we can solve for a and b. The resulting values will give us the calculated values of a and b.

What is the system of equations?

A system of equations is a collection of one or more equations that are considered together. The system can consist of linear or nonlinear equations and may have one or more variables. The solution to a system of equations is the set of values that satisfy all of the equations in the system simultaneously.

To calculate the values of a and b, we can use the given data points (x, y) = (1.78, 21.84) and (-4, -4).

We have the equation y = a + bx, where y is the dependent variable and x is the independent variable.

Using the first data point (1.78, 21.84), we can substitute the values into the equation:

21.84 = a + b(1.78)

Similarly, using the second data point (-4, -4):

-4 = a + b(-4)

Now we have a system of two equations:

1) a + 1.78b = 21.84

2) a - 4b = -4

To solve this system of equations, we can use any method such as substitution or elimination.

Using the elimination method, we can multiply equation 2 by 1.78 to eliminate the variable a:

1.78(a - 4b) = 1.78(-4)

1.78a - 7.12b = -7.12

Now we can subtract equation 1 from this modified equation:

(1.78a - 7.12b) - (a + 1.78b) = -7.12 - 21.84

1.78a - a - 7.12b - 1.78b = -28.96

0.78a - 8.9b = -28.96

Simplifying the equation further, we get:

0.78a - 10.68b = -28.96

Now we have a new equation:

3) 0.78a - 10.68b = -28.96

We can now solve equations 2 and 3 as a system of linear equations:

2) a - 4b = -4

3) 0.78a - 10.68b = -28.96

Hence,

Using any suitable method (substitution or elimination), we can solve for a and b. The resulting values will give us the calculated values of a and b.

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Let D be the region bounded by the two paraboloids z = 2x² + 2y² - 4 and z = 5-x² - y² where x 20 and y 20. Which of the following triple integral in cylindrical coordinates allows us to evaluate the volume of D? 73 5 dzdrdė None of these This option √²³²4²² r dzdrdo This option O This option fő f³2 r dzdrde This option

Answers

To evaluate the volume of the region D bounded by the paraboloids [tex]z=2x^{2} -2y^{2} -4[/tex] and [tex]z=5-x^{2} -y^{2}[/tex] in the first quadrant (x ≥ 0, y ≥ 0).

In cylindrical coordinates, we have:

x = r cos(θ)

y = r sin(θ)

z = z

The limits of integration for r, θ, and z can be determined by the intersection points of the two paraboloids.

Setting [tex]z=2x^{2} -2y^{2} -4[/tex] equal toz=5-x^{2} -y^{2}, we can solve for the intersection points. The region D is bounded by the curves [tex]x^{2} +y^{2}=2[/tex].

The limits for θ are from 0 to π/2, as we are considering the first quadrant (x ≥ 0, y ≥ 0).

The limits for r are from 0 to [tex]\sqrt{2}[/tex], as the region is bounded by the curves [tex]x^{2} +y^{2}=2[/tex].

The limits for z are from 5 -[tex]r^{2}[/tex] to 2 - 4[tex]r^{2}[/tex], representing the upper and lower surfaces of the region D.

Therefore, the correct choice is c. [tex]\int\limits^{\frac{\pi }{2} }_0\int\limits^{\sqrt{3} }_{_0} \int\limits^\(2-4r^{2} }} _{5-r^2}[/tex] r dz dr dθ, which allows us to evaluate the volume of the region D.

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The complete question is:

Let D be the region bounded by the two paraboloids [tex]z=2x^{2} -2y^{2} -4[/tex] and [tex]z=5-x^{2} -y^{2}[/tex] where x ≥ 0 and y ≥ 0. Which of the following triple integral in cylindrical coordinates allows us to evaluate the volume of D?

a.  [tex]\int\limits^{\frac{\pi }{2} }_0\int\limits^{\sqrt{3} }_{_0} \int\limits^\(5-r^{2} }} _{2r^2-4}[/tex] dz dr dθ

b. None of these.

c. [tex]\int\limits^{\frac{\pi }{2} }_0\int\limits^{\sqrt{3} }_{_0} \int\limits^\(2-4r^{2} }} _{5-r^2}[/tex] rdz dr dθ

d. [tex]\int\limits^{\frac{\pi }{2} }_0\int\limits^{\sqrt{3} }_{_0} \int\limits^\(5-r^{2} }} _{2r^2-4}[/tex] rdz dr dθ

Two lines intersect to form the angles shown. Which statements are true? Select each correct answer. Responses m∠2=80° measure of angle 2 equals 80 degrees ​m∠3=80°​ ​, measure of angle 3 equals 80 degrees, ​ m∠1=100° measure of angle 1 equals 100 degrees m∠3=m∠1 measure of angle 3 equals measure of angle 1 Two intersecting lines that create angles 1, 2, 3, and a 100 degree angle

Answers

The complete question may  be like:

Two lines intersect to form the angles shown. Which statements are true?

m∠2=80° measure of angle 2 equals 80 degrees ​m∠3=80°​ ​, measure of angle 3 equals 80 degrees, ​ m∠1=100° measure of angle 1 equals 100 degrees m∠3=m∠1 measure of angle 3 equals measure of angle 1

Two intersecting lines that create angles 1, 2, 3, and a 100 degre.

The correct statement is: m∠1=100°, meaning that the measure of angle 1 equals 100 degrees. So, option 3 is the right choice.

Based on the given information, we have two intersecting lines that create angles 1, 2, and 3, with angle 1 measuring 100 degrees. Let's evaluate each statement:

m∠2=80°: This statement is not true. There is no information provided regarding the measure of angle 2, so we cannot conclude that it is 80 degrees.

m∠3=80°: This statement is not true. Similar to the previous statement, there is no information given about the measure of angle 3, so we cannot conclude that it is 80 degrees.

m∠1=100°: This statement is true. It is given that the measure of angle 1 is 100 degrees.

m∠3=m∠1: This statement is not necessarily true. Since no specific values are provided for angles 1 and 3, we cannot determine whether their measures are equal or not.

In summary, the correct statement is: m∠1=100°, meaning that the measure of angle 1 equals 100 degrees. The other statements cannot be determined based on the given information.

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6 Which of the following is equal to II i!? 1-3 O 43 x 52 x 65 o (6!) O 64 O 25 x 34 x 48 x 52 x 6 O (4) O (3!)" x 4 x 5 x 6

Answers

The expression II i! represents the factorial of an integer i. Among the given options, the correct representation of II i! is (4).

The factorial of an integer i, denoted as i!, is the product of all positive integers from 1 to i. In the given options, we need to find the equivalent representation of II i!. Option (4) states II i!, which means we need to multiply the factorial of each integer from 1 to i. In this case, i = 4. So, (4) represents the multiplication of 1!, 2!, 3!, and 4!.

On the other hand, the other options do not represent the factorial of i. Option (1) represents the multiplication of individual numbers without the factorial notation. Option (2) and (3) represent the multiplication of specific numbers without considering the factorial notation. Option (5) represents the multiplication of specific numbers without considering the factorial notation and includes additional numbers not present in the factorial calculation. Option (6) represents a combination of factorial notation and specific numbers.

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man starts walking south at 5 ft/s from a point P. Thirty minute later, a woman
starts waking north at 4 ft/s from a point 100 ft due west of point P. At what rate
are the people moving apart 2 hours after the man starts walking?

Answers

The people are moving apart at a rate of approximately 7.42 ft/min, 2 hours after the man starts walking.

To solve this problem

Let's start by thinking about the horizontal component. When the lady begins to walk after 2 hours (or 120 minutes), the guy has been walking for a total of 150 minutes, having walked for 30 minutes. The man is moving at a steady speed of 5 feet per second, hence the horizontal distance he has traveled is:

Horizontal distance = (5 ft/s) * (150 min) = 750 ft.

Let's now think about the vertical component. After starting her walk 30 minutes after the male, the lady has covered 120 minutes of distance. She moves at a steady 4 feet per second, so the vertical distance she has reached is:

Vertical distance = (4 ft/s) * (120 min) = 480 ft.

The horizontal and vertical distances act as the legs of a right triangle as the people move apart. We may apply the Pythagorean theorem to determine the speed at which they are dispersing:

[tex]Distance^2 = Horizontal distance^2 + Vertical distance^2.[/tex]

[tex]Distance^2 = (750 ft)^2 + (480 ft)^2.[/tex]

[tex]Distance^2 = 562,500 ft^2 + 230,400 ft^2.[/tex]

[tex]Distance^2 = 792,900 ft^2.[/tex]

[tex]Distance = sqrt(792,900 ft^2).[/tex]

Distance ≈ 890.74 ft.

Now, we need to determine the rate at which they are moving apart. Since they are 2 hours (or 120 minutes) into their walks, we can calculate the rate at which they are moving apart by dividing the distance by the time:

Rate = Distance / Time = 890.74 ft / 120 min.

Rate ≈ 7.42 ft/min.

Therefore, the people are moving apart at a rate of approximately 7.42 ft/min, 2 hours after the man starts walking.

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Determine the time t necessary for $5900 to double if it is invested at interest rate r = 6.5% compounded annually, monthly, daily, and continuously. (Round your answers to two decimal places.)

(a) annually

t =

(b) monthly, t =

(c) daily,

(d) continuously

t =

Answers

The time required for $5900 to double is approximately 10.70 years for annual compounding, 10.73 years for monthly compounding, 10.74 years for daily compounding, and 10.66 years for continuous compounding.

To determine the time required for $5900 to double at different compounding frequencies, we can use the compound interest formula:

A = P(1 + r/n)^(n*t)

Where A is the final amount, P is the initial principal, r is the interest rate, n is the compounding frequency per year, and t is the time in years.

(a) Annually:

In this case, the interest is compounded once a year. To double the initial amount, we set A = 2P and solve for t:

2P = P(1 + r/1)^(1*t)

2 = (1 + 0.065)^t

T = log(2) / log(1.065)

T ≈ 10.70 years

(b) Monthly:

Here, the interest is compounded monthly, so n = 12. We use the same formula:

2P = P(1 + r/12)^(12*t)

2 = (1 + 0.065/12)^(12*t)

T = log(2) / (12 * log(1 + 0.065/12))

T ≈ 10.73 years

(C) Daily:

With daily compounding, n = 365. Again, we apply the formula:

2P = P(1 + r/365)^(365*t)

2 = (1 + 0.065/365)^(365*t)

T = log(2) / (365 * log(1 + 0.065/365))

T ≈ 10.74 years

(c) Continuously:

For continuous compounding, we use the formula A = Pe^(r*t):

2P = Pe^(r*t)

2 = e^(0.065*t)

T = ln(2) / 0.065

T ≈ 10.66 years

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Find the area bounded by the graphs of the indicated equations over the given interval. y = -x2 +22; y = 0; -35x53

Answers

The area bounded by the graphs of the equations [tex]\(y = -x^2 + 22\), \(y = 0\)[/tex], and [tex]\(x = -35\)[/tex] over the interval [tex]\([-5, 3]\)[/tex] is 92 square units.To find the area bounded by the graphs of the given equations, we need to find the region enclosed between the curves [tex]\(y = -x^2 + 22\)[/tex] and [tex]\(y = 0\)[/tex], and between the vertical lines [tex]\(x = -5\)[/tex] and [tex]\(x = 3\)[/tex].

First, we find the x-values where the curves intersect by setting [tex]\(-x^2 + 22 = 0\)[/tex]. Solving this equation, we get [tex]\(x = \pm \sqrt{22}\)[/tex]. Since the interval of interest is [tex]\([-5, 3]\)[/tex], we only consider the positive value, [tex]\(x = \sqrt{22}\)[/tex].

Next, we integrate the difference of the two curves from [tex]\(x = -5\) to \(x = \sqrt{22}\)[/tex] to find the area. Using the formula for finding the area between two curves, the integral becomes [tex]\(\int_{-5}^{\sqrt{22}} (-x^2 + 22) \,dx\)[/tex]. Evaluating this integral, we get [tex]\(\frac{-254\sqrt{22}}{3}\)[/tex].

To find the total area, we subtract the area of the triangle formed by the region between the curve and the x-axis from the previous result. The area of the triangle is [tex]\(\frac{1}{2} \times 8 \times (\sqrt{22} - (-5)) = 4(\sqrt{22} + 5)\)[/tex].

Finally, we subtract the area of the triangle from the total area to get the final result: [tex]\(\frac{-254\sqrt{22}}{3} - 4(\sqrt{22} + 5) = 92\)[/tex].

Therefore, the area bounded by the given equations over the interval [tex]\([-5, 3]\)[/tex] is 92 square units.

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1. Julie is making a sundae. She has 4 flavors
of ice cream, two kinds of chocolate
sauce and 5 different fruit toppings. If she
picks one of each, how many different
Sundaes could she make?

Answers

Julie can make 40 different sundaes by picking one flavor of ice cream, one kind of chocolate sauce, and one fruit topping.

We have,

To determine the number of different sundaes Julie can make by picking one flavor of ice cream, one kind of chocolate sauce, and one fruit topping, we need to multiply the number of options for each category.

Julie has 4 flavors of ice cream to choose from.

She has 2 kinds of chocolate sauce to choose from.

She has 5 different fruit toppings to choose from.

To calculate the total number of different sundaes, we multiply the number of options for each category:

Total number of different sundaes

= (Number of ice cream flavors) x (Number of chocolate sauce options) x (Number of fruit topping options)

Total number of different sundaes

= 4 x 2 x 5

= 40

Therefore,

Julie can make 40 different sundaes by picking one flavor of ice cream, one kind of chocolate sauce, and one fruit topping.

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4. [0/4 Points] DETAILS PREVIOUS ANSWERS SCALCET8 16.7.507.XP. MY NOTES PRACTICE ANOTHER Evaluate the surface integral 16² F. ds for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. s F(x, y, z) = xzi + xj + y k S is the hemisphere x² + y² + z² = 16, y ≥ 0, oriented in the direction of the positive y-axis X Need Help? Read It

Answers

The flux of F across S is 0.

The surface integral ∫∫S F · dS is used to find the flux of the vector field F across the oriented surface S. In this case, the vector field F is given by F(x, y, z) = xy i + 4x2 j + yz k and the oriented surface S is given by z = xey, 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, with upward orientation.

To evaluate the surface integral, we need to find the normal vector to the surface S. The normal vector is given by the cross product of the partial derivatives of the surface equation with respect to x and y:

∂S/∂x = <1, 0, ey>

∂S/∂y = <0, 1, xey>

N = ∂S/∂x x ∂S/∂y = <-ey, -xey, 1>

Since the surface S has an upward orientation, we need to make sure that the normal vector N points upward. We can do this by taking the dot product of N with the upward vector k:

N · k = -ey * 0 - xey * 0 + 1 * 1 = 1

Since the dot product is positive, the normal vector N points upward and we can use it in the surface integral.

Next, we need to substitute the surface equation z = xey into the vector field F to get F(x, y, xey) = xy i + 4x2 j + xyey k.

Now we can evaluate the surface integral:

∫∫S F · dS = ∫∫S (xy i + 4x2 j + xyey k) · (-ey i - xey j + k) dS

= ∫∫S (-xyey - 4x3ey + xyey) dS

= ∫∫S 0 dS

= 0

Therefore, the flux of F across S is 0.

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Let f be a continuous function on all of R?. We will consider a closed bounded region D which is the union of two closed subregions, D, and D2, which we assume overlap in at most a portion of their boundary curves (think about D= [0,2] x [0,2], Di = [0, 1] x [0,2], and D2 = [1,2] x [0,2]). Under this assumption, the formula SLS-SLs+Jl. SI = f is valid (this is the two-dimensional analogue of the "interval additivity" of integrals in one variable) (a) Suppose that Morty, after receiving (a lot) of help from Summer, expressed the inte- gral SSD, f as the iterated integral 2y [ (S" ser, v)de )dy. ſ *S( Assuming Morty's expression is correct, use the iterated integral to make a clear, detailed sketch of Dı, making sure to label all important elements. (b) Although Summer objects to Morty's choice of order of integration, for consistency, she uses the same order of integration to express SSD, f as the iterated integral $ (&*"" s(2), v)de)dy. Assuming Summer's expression is correct, use the iterated integral to make a clear, detailed sketch of D2, making sure to label all important elements. (c) When Rick gets home from his latest solo adventure (the Space Met Gala), he is appalled to see that his grandchildren have expressed SSD f as a sum of two iterated integrals when, in fact, one should suffice. To prove him correct, begin by combining your drawings of D, and D2 from (a) and (b) into a clear, detailed sketch of D, making sure to label all important elements (you can ignore any overlapping boundaries of Di and D2 which would appear in the interior of D). (a) Use your sketch of D from (c) to express SSS as a single iterated integral. (Hint: If you want to (at least partially) check your answer here, let f be your favorite function, say fr, y) = 2y, compute the iterated integrals from (a), (b), and (c), and ensure that the first two add up to the third.

Answers

You can substitute your favorite function f(x, y) = 2y and evaluate the iterated integrals from parts (a), (b), and (c), ensuring that the sum of the first two iterated integrals equals the result of the third one.

To answer this question, let's follow the steps outlined and work through each part. (a) Morty expressed the integral SSD, f as the iterated integral 2y [(∫(S" ser, v)de)dy]. This means we integrate first with respect to x over the interval [0, 2], and then with respect to y over the interval determined by the function 2y. Let's sketch D1 based on this expression:

lua

   |       D1       |

   |---------------|

   |               |

   |               |

   |               |

   |_______________|

   0      1      2

In this sketch, D1 represents the region [0, 1] × [0, 2]. The integral iterates over x from 0 to 2, and for each x, it integrates over y from 0 to 2x.

(b) Summer objects to Morty's choice of integration order and uses the same order of integration as Morty, expressing SSD, f as the iterated integral ∫(∫(s(2), v)de)dy. Let's sketch D2 based on this expression:

lua

   |       D2       |

   |---------------|

   |               |

   |               |

   |               |

   |_______________|

   1      2

In this sketch, D2 represents the region [1, 2] × [0, 2]. The integral iterates over x from 1 to 2, and for each x, it integrates over y from 0 to 2.

(c) To combine the drawings of D1 and D2 into a sketch of D, we merge the two regions together, ignoring any overlapping boundaries:

lua

   |       D       |

   |---------------|

   |               |

   |               |

   |               |

   |_______________|

   0      1      2

In this sketch, D represents the union of D1 and D2. It covers the entire region [0, 2] × [0, 2].

To express the sum of the two iterated integrals SSD, f, we need to account for the fact that D1 and D2 overlap in the region [1, 2] × [0, 2]. We can split the integral into two parts: one over D1 and one over D2.

SSD, f = ∫(∫(S" ser, v)de)dy + ∫(∫(s(2), v)de)dy

Now let's express SSD, f as a single iterated integral using the sketch of D:

SSD, f = ∫(∫(S" ser, v)de)dy + ∫(∫(s(2), v)de)dy

= ∫(∫(S" ser, v)de + ∫(s(2), v)de)dy

= ∫(∫(f(x, y))de)dy

In this expression, we integrate over the entire region D, which is [0, 2] × [0, 2], with the function f(x, y) defined on D.

Note that the order of integration in this final expression doesn't matter since we are integrating over the entire region D.

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3. Find the G.S. ......... y"+3y + 2y = 1+e" *3y+2= 4. Find the G.S. A= 4 1-2-2 -2 3 2 -1 3 2=4

Answers

Solving the differential equation y"+3y+2y=1+e first requires determining the complementary function and then the particular integral to reach the General Solution (GS).

Step 1:

Find CF. By substituting y=e^(rt) into the differential equation,

we solve the homogeneous equation and obtain an auxiliary equation by setting the coefficient of e^(rt) to zero.

Here's how: y"+3y+2y = 0Using y=e^(rt), we get:r^2e^(rt) = 0.

Dividing throughout by e^(rt) yields:

r^2 + 3r + 2 = 0.

Auxiliary equation. (r+1)(r+2) = 0.

Two actual roots are r=-1 and r=-2.

The complementary function is y_c = Ae^(-t) + Be^(-2t), where A and B are integration constants.

Step 2:

Calculate PI. Right-hand side is 1+e.

Since 1 is constant, its derivative is zero.

Since e is in the complementary function, we must try a different integral expression.

Trying a(t)e^(rt) since e is ae^(rt).

We get:2a(t)e^(rt)= e Choosing a(t) = 1/2 yields an integral: y_p = 1/2eThis yields: Thus, y_p = 1/2.

e The General Solution is the complementary function and particular integral: where A and B are integration constants.

The General Solution (GS) of the differential equation y"+3y+2y=1+e is y = Ae^(-t) + Be^(-2t) + 1/2e,

where A and B are integration constants.

The determinant of matrix A is:

|A| = 4(-4-4) - 1(8-3) + 2(6-(-2)).

|A| = 4(-8) - 1(5) + 2(8)

|A| = -32 - 5 + 16|A| = -21A's determinant is -21.

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a k/n lottery requires choosing k of the numbers 1 through n. how many different lottery tickets can you choose for a 7/47 lottery? (order is not important, and the numbers do not repeat.)

Answers

There are 62,891,499 different lottery tickets you can choose for a 7/47 lottery where order is not important, and numbers do not repeat.

What is combination formula?

Using a combination formula, we may extract the number of alternative arrangements from a set of objects or numbers. The combination formula, however, enables us to select a necessary item from a group of items.

To calculate the number of different lottery tickets you can choose for a 7/47 lottery, where order is not important and numbers do not repeat, we can use the concept of combinations.

In a 7/47 lottery, you need to choose 7 numbers out of 47 without considering their order and with no repetition. This can be calculated using the combination formula.

The combination formula is given by:

C(n, k) = n! / (k!(n-k)!)

Where n! represents the factorial of n, which is the product of all positive integers up to n.

In this case, we have n = 47 (the total number of available numbers) and k = 7 (the number of numbers to be chosen).

Plugging these values into the combination formula, we get:

C(47, 7) = 47! / (7!(47-7)!)

Simplifying this expression, we have:

C(47, 7) = 47! / (7! * 40!)

Since the numbers are quite large, it's more practical to use a calculator or a computer program to compute the factorial values and perform the division.

Using a calculator or a program, we find that C(47, 7) is equal to 62,891,499.

Therefore, there are 62,891,499 different lottery tickets you can choose for a 7/47 lottery where order is not important, and numbers do not repeat.

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2. You pick up litter! Your OK bag (x) can hold at most 20 pounds and your good bag (r) can hold at most 25 pounds. The inequalities below represent this
X < 20
y ≤ 25
Which is acceptable?
1. 15 pounds in the OK bag and 8 pounds in the good bag
2. 20 pounds in the OK bag and 30 pounds in the good bag
3. 21 pounds in the OK bag and 9 pounds in the good bag

Answers

Answer #1 is acceptable. It doesn’t go over any limits

Evaluate the limit using L'Hôpital's rule e² + 6x 1 [H] lim 6x I 0

Answers

To evaluate the limit using L'Hôpital's rule, we need to take the derivative of the numerator and denominator separately and then evaluate the limit again.

Given the expression: lim (6x / e^2 + 6x) as x approaches 0

Taking the derivative of the numerator and denominator separately:

The derivative of 6x with respect to x is simply 6.

The derivative of e^2 + 6x with respect to x is 6.

Now we have the new expression:

lim (6 / 6) as x approaches 0

Simplifying, we get:

lim 1 as x approaches 0

Therefore, the limit of the expression is equal to 1.

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autosave question472902 37 A study found that a businessperson with a master's degree in business administration (MBA) earned an average salary of S(x, y) 48,346+ 49313844y dollars in 2005, where x is the number of years of work experience before the MBA, and y is the number of years of work experience after the MBA. Find Sy 5,- Interpret your answer. O Salary decrease for each additional year of work before the MBA. O Salary increase for each additional year of work before the MBA. O Salary increase for each additional year of work after the MBA. O Salary decrease for each additional year of work after the MBA. O none of these Find Sy 5y = Interpret your answer. O Salary decrease for each additional year of work before the MBA. O Salary increase for each additional year of work before the MBA. Salary increase for each additional year of work after the MBA O Salary decrease for each additional year of work after the MBA

Answers

Salary increase for each additional year of work after the MBA.

To find Sy, we substitute the value of y = 5 into the given equation: S(x, y) = 48,346 + 49,313,844y.

S(x, 5) = 48,346 + 49,313,844(5)

= 48,346 + 246,569,220

= 294,915,566 dollars.

Interpretation:

Sy represents the salary of a business person with 5 years of work experience after obtaining an MBA degree. In this case, the calculated value of Sy is $294,915,566.

Since the coefficient of y in the equation is positive (49,313,844), we can interpret the result as a salary increase for each additional year of work experience after obtaining the MBA. Therefore, the correct answer is: Salary increase for each additional year of work after the MBA.

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You have a hoop of charge of radius R and total charge -Q. You place a positron at the center of the hoop and give it a slight nudge. Due to the negative charge on the hoop, the positron oscillates back and forth. Use VPython to find the force on a positron a distance d=0.13mm above a center of a ring of R=5.2cm and charge Q=-3.7×10-9C. Use this result as a reasonableness test for this HIP. Print out an include your program with what you turn in.

Answers

Using VPython, the force on a positron placed a distance above the center of a negatively charged hoop can be calculated by considering the electric field generated by the hoop. This calculation can be used as a reasonableness test for the given scenario.

To find the force on the positron, we can use the formula for the electric field due to a charged ring. The electric field at a point on the axis of a uniformly charged ring is given by E = (kQz)/(R² + z²)^(3/2), where k is the electrostatic constant, Q is the charge on the hoop, R is the radius of the hoop, and z is the distance from the center of the hoop.

By using this formula, we can calculate the electric field at a distance d above the center of the hoop. Then, we can multiply the electric field by the charge of the positron to obtain the force on the positron.

By implementing this calculation in VPython and providing the values for the variables, we can determine the force on the positron. This force can serve as a reasonableness test for the scenario, as it allows us to verify whether the calculated force aligns with our expectations based on the known charges and distances involved.

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a)state the definition of the derivative
b) find the dervative of the function y=5x^2-2x+1 using
definition of derivative

Answers

a) The derivative of a function is the instantaneous rate of change of the function with respect to its input variable.

b) The derivative of the function [tex]y = 5x^2 - 2x + 1[/tex] using the definition of the derivative is: f'(x) = 10x - 2

How is the definition of the derivative used to calculate the instantaneous rate of change of a function at a specific point?

The derivative of a function measures how the function changes at an infinitesimally small scale, indicating the slope of the function's tangent line at any given point. It provides insights into the function's rate of change, velocity, and acceleration, making it a fundamental concept in calculus and mathematical analysis.

By calculating the derivative, we can analyze and understand various properties of functions, such as determining critical points, finding maximum or minimum values, and studying the behavior of curves.

How is the derivative of the function obtained using the definition of the derivative?

To find the derivative of [tex]y = 5x^2 - 2x + 1[/tex], we apply the definition of the derivative. By taking the limit as the change in x approaches zero, we calculate the difference quotient[tex][(f(x + h) - f(x)) / h][/tex] and simplify it. In this case, the derivative simplifies to f'(x) = 10x - 2.

This result represents the instantaneous rate of change of the function at any given point x, indicating the slope of the tangent line to the function's graph. The derivative function, f'(x), provides information about the function's increasing or decreasing behavior and helps analyze critical points, inflection points, and the overall shape of the curve.

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find the kernel of the linear transformation. (if all real numbers are solutions, enter reals.) t: r3 → r3, t(x, y, z) = (0, 0, 0)

Answers

The kernel of the linear transformation t: ℝ³ → ℝ³, t(x, y, z) = (0, 0, 0) is the set of all vectors in ℝ³ that map to the zero vector (0, 0, 0).

In a linear transformation, the kernel represents the subspace of the domain vector space that maps to the zero vector in the codomain vector space. In this case, the transformation t maps all vectors in ℝ³ to the zero vector (0, 0, 0). Therefore, the kernel of t consists of all vectors (x, y, z) in ℝ³ such that t(x, y, z) = (0, 0, 0).

Since the transformation t simply maps every vector in ℝ³ to the zero vector (0, 0, 0), the kernel of t is the entire space ℝ³. In other words, every vector in ℝ³ is a solution to the equation t(x, y, z) = (0, 0, 0). Hence, the kernel of the linear transformation t: ℝ³ → ℝ³ is ℝ³, or in other words, the set of all real numbers.

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How many positive interpers not exceeding 1000 that are not divible by either 8 or 12

Answers

There are 834 positive integers not exceeding 1000 that are not divisible by either 8 or 12.

To find the number of positive integers not exceeding 1000 that are not divisible by either 8 or 12, we can use the principle of inclusion-exclusion. First, let's find the number of positive integers not exceeding 1000 that are divisible by 8. The largest multiple of 8 that does not exceed 1000 is 992 (8 * 124). So, there are 124 positive integers not exceeding 1000 that are divisible by 8. Next, let's find the number of positive integers not exceeding 1000 that are divisible by 12. The largest multiple of 12 that does not exceed 1000 is 996 (12 * 83). So, there are 83 positive integers not exceeding 1000 that are divisible by 12.

However, we have counted some numbers twice—those that are divisible by both 8 and 12. To correct for this, we need to find the number of positive integers not exceeding 1000 that are divisible by both 8 and 12 (i.e., divisible by their least common multiple, which is 24). The largest multiple of 24 that does not exceed 1000 is 984 (24 * 41). So, there are 41 positive integers not exceeding 1000 that are divisible by both 8 and 12.

Now, we can apply the principle of inclusion-exclusion to find the number of positive integers not exceeding 1000 that are not divisible by either 8 or 12: Total number of positive integers not exceeding 1000 = Total number of positive integers - Number of positive integers divisible by 8 or 12 + Number of positive integers divisible by both 8 and 12. Total number of positive integers not exceeding 1000 = 1000 - 124 - 83 + 41

= 834. Therefore, there are 834 positive integers not exceeding 1000 that are not divisible by either 8 or 12.

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Determine the domain and range of the function f(x) = –|x| + 2.



The domain of the function is
.

The range of the function is

Answers

The domain of the function f(x) = –|x| + 2 is (-∞, ∞) because there are no restrictions on the input values x.The Range of the function is [2, ∞) because the function is shifted upwards by 2 units, resulting in non-negative output values starting from 2.

The domain of a function refers to the set of all possible input values for the function. In this case, the function is f(x) = –|x| + 2. The absolute value function |x| is defined for all real numbers, so there are no restrictions on the input values for x. Therefore, the domain of f(x) is the set of all real numbers, which can be represented as (-∞, ∞).

The range of a function refers to the set of all possible output values. In this case, the function f(x) = –|x| + 2 involves the absolute value of x, which can only yield non-negative values. The negative sign in front of the absolute value implies that the output values will be negated. However, the constant term 2 ensures that the function will be shifted upwards by 2 units.

Considering these factors, we can determine the range of f(x) by finding the maximum value of –|x| and adding 2. The maximum value of –|x| occurs when x = 0, where the absolute value is 0. Therefore, f(0) = –|0| + 2 = 2. Adding 2 to the maximum value, we get a range of [2, ∞).

In summary:

- The domain of the function f(x) = –|x| + 2 is (-∞, ∞) because there are no restrictions on the input values x.

- The range of the function is [2, ∞) because the function is shifted upwards by 2 units, resulting in non-negative output values starting from 2.

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Find the area of the surface generated by revolving the given curve about the y-axis. x = V36 – y?, -15y

Answers

The surface area is given by A = 2π ∫[-6, 6] (V36 - y²) (2πy) dy. Evaluating this integral will give us the final answer for the surface area generated by revolving the curve x = V36 – y² about the y-axis.

To find the limits of integration, we need to determine the range of y-values that correspond to the curve. Since x = V36 – y², we can solve for y to find the limits. Rearranging the equation, we have y² = V36 - x, which gives us y = ±√(36 - x).

The lower limit of integration is determined by the point where the curve intersects the y-axis, which is when x = 0. Plugging this into the equation y = √(36 - x), we find y = 6. The upper limit of integration is determined by the point where the curve intersects the x-axis, which is when y = 0. Plugging this into the equation y = √(36 - x), we find x = 36, so the upper limit is y = -6.

Using these limits of integration, we can now calculate the surface area generated by revolving the curve. The surface area is given by A = 2π ∫[-6, 6] (V36 - y²) (2πy) dy. Evaluating this integral will give us the final answer for the surface area generated by revolving the curve x = V36 – y² about the y-axis.

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ASAP 25 POINTS A triangle is shown in the image. A triangle with a height of 16 inches. The height is perpendicular to the base labeled 32 inches. The side from the top of the perpendicular side to the base is labeled 35 inches. What is the area of the triangle represented?

Answers

The area of the triangle is determined from the base and height of the triangle as 256 in².

What is the area of the triangle?

The area of the triangle is calculated by applying the formula for the area of a triangle as follows;

Area of triangle = ¹/₂ x base x height

where;

base of the triangle = 32 inchesheight of the triangle = 16 inches

The area of the triangle is calculated as follows;

Area of triangle = ¹/₂ x base x height

Area of triangle = ¹/₂ x 32 in x 16 in

Area of triangle = 256 in²

Thus, the  area of the triangle is calculated by applying the formula for the area of a triangle.

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62, 68, 67, 79, 82, 50, 74, 62
(a) Calculate the median

Answers

Median: the median is the middle
To begin out the number in order least to greatest

1. 50,62,62,67,68,79,82

You begin to cross out both end to reach the middle

Answer; 67
50,62,62,67,68,74,79,82
Then leaves you with 67,68
So the answer is 67.5

find the chi-square value corresponding to a sample size of 17 and a confidence level of 98 percent.

Answers

the chi-square value corresponding to a sample size of 17 and a confidence level of 98 percent is 31.410.

To find the chi-square value corresponding to a sample size of 17 and a confidence level of 98 percent, we need to look up the critical value of the chi-square distribution.

The chi-square distribution is determined by the degrees of freedom, which in this case is equal to the sample size minus 1. Since the sample size is 17, the degrees of freedom will be 17 - 1 = 16.

To find the chi-square value at a 98 percent confidence level, we need to determine the critical value associated with an alpha level of 0.02 (since the confidence level is 98 percent, the remaining 2 percent is split into two tails, each with a probability of 1 percent or 0.01).

Using a chi-square distribution table or a statistical calculator, the critical chi-square value with 16 degrees of freedom and an alpha level of 0.02 is approximately 31.410.

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4. Find the parametric equations for the line passing through the points A(3,1,5) and B(-2,5,-1).

Answers

The integral of the region bounded by the given function, the 3-axis, and the given vertical lines is given by;∫(2,8)∫(0, 1(z))∫(0, 2π) rdφ dz..., where; $1(z)=22+3z$... is the function of z-coordinate; r... is the polar coordinate in the xy-plane.

Using polar coordinates, r becomes;$$r^2 = x^2+y^2$$. But the region lies above the z-axis which means that x and y will both be positive. Thus;$$r^2 = x^2+y^2 \Rightarrow r = \sqrt{x^2+y^2}$$$$\because x,y \geq 0$$$$\Rightarrow \phi \in \left[0, \frac{\pi}{2}\right]$$.

Hence, the area of the region is given by;$$\begin{aligned}\int_{2}^{8}\int_{0}^{1(z)}\int_{0}^{2\pi}r\ d\phi dz\ dr &= \int_{2}^{8}\int_{0}^{1(z)}\left[r\phi\right]_{0}^{2\pi} dz\ dr\\ &= \int_{2}^{8}\int_{0}^{1(z)}2\pi r\ dz\ dr\\ &= 2\pi\int_{2}^{8}\left[rz\right]_{0}^{1(z)}\ dr\\ &= 2\pi\int_{2}^{8}(22+3z)\ dr\\ &= 2\pi\left[\frac{22r}{r}\right]_{2}^{8} + 2\pi\left[\frac{3r^2}{2}\right]_{2}^{8}\\ &= 2\pi\cdot20 + 2\pi\cdot54\\ &= \boxed{148\pi}\end{aligned}$$.

Therefore, the area of the region bounded by the function, the 3-axis, and the given vertical lines is $148\pi$.

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Mister Bad Manners #1 makes a faux pas once every 45 seconds. Mister Bad Manners #2 makes a faux pas once every 75 seconds. Working together, how many seconds will it take them to make 48 faux pas?

Answers

Answer:

To calculate the time it will take for Mister Bad Manners #1 and Mister Bad Manners #2 to make 48 faux pas together, we need to determine their combined faux pas rate.

Mister Bad Manners #1: 1 faux pas every 45 seconds

Mister Bad Manners #2: 1 faux pas every 75 seconds

By adding their rates together, their combined faux pas rate is 1 faux pas every (45 + 75) seconds.

Hence, it will take them (45 + 75) seconds to make 48 faux pas together.

Step-by-step explanation:

Based on previous experience, a used car salesman has established that he can sell 0, 1, 2, or 3 cars per day, with equal probability. If the number of cars he sells per day is a random variable construct a table showing its probability distribution. P(x)

Answers

The probability distribution for this problem is given as follows:

P(X = 0) = 0.25.P(X = 1) = 0.25.P(X = 2) = 0.25.P(X = 3) = 0.25.

How to calculate a probability?

The parameters that are needed to calculate a probability are listed as follows:

Number of desired outcomes in the context of a problem or experiment.Number of total outcomes in the context of a problem or experiment.

Then the probability is then calculated as the division of the number of desired outcomes by the number of total outcomes.

For this problem, we have that there are four outcomes which are equally as likely, hence the probability of each outcome is given as follows:

1/4 = 0.25.

The distribution is then given as follows:

P(X = 0) = 0.25.P(X = 1) = 0.25.P(X = 2) = 0.25.P(X = 3) = 0.25.

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find all relative extrema of the function. use the second derivative test where applicable. (if an answer does not exist, enter dne.) y = x2 log2 x

Answers

The function y = x²log2(x) has a relative minimum at x = 1 and no other relative extrema.

To find the relative extrema of the function y = x²log2(x), we need to determine the critical points and apply the second derivative test where applicable. First, we find the derivative of the function using the product rule:

dy/dx = 2x log2(x) + x²* 1/x * ln(2)

      = 2x log2(x) + x ln(2)

To find the critical points, we set the derivative equal to zero:

2x log2(x) + x ln(2) = 0

Simplifying the equation, we have:

x log2(x) + x ln(2) = 0

x(log2(x) + ln(2)) = 0

Since x cannot be equal to zero, we solve the equation log2(x) + ln(2) = 0:

log2(x) = -ln(2)

[tex]x = 2^{(-ln(2))[/tex]

The critical point is [tex]x = 2^{(-ln(2))[/tex], which is approximately 0.2413.

Next, we check the second derivative to determine the nature of the critical point. Taking the derivative of the first derivative, we get:

d²y/dx² = 2 log2(x) + 2 + ln(2)

Evaluating the second derivative at [tex]x = 2^{(-ln(2))[/tex], we find:

d²y/dx²=

[tex]=2 log2(2^{(-ln(2))}) + 2 + ln(2) \\=-2 ln(2) + 2 + ln(2) \\=2 - ln(2)[/tex]

Since the second derivative is positive (2 - ln(2) > 0), the critical point at [tex]x = 2^{(-ln(2))[/tex] is a relative minimum.

In conclusion, the function [tex]y = x^2 log2(x)[/tex]  has a relative minimum at x = 1 and no other relative extrema.

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Find the equation of the curve that passes through (2,3) if itsslope is given by the following equation. dy/dx=6x-7 .Employee involvement and group membership were two of the reasons employees gave as the reason for increased ___________________ during the Hawthorne studies: Which of the following is done to improve the reliability of the sales forecast? a)lengthen the planning horizon to more than a year b)Use the sales forecasts from the previous year c)Rely solely on outside consultants d)Receive input from top management Find the area of the surface generated by revolving the given curve about the x-axis. y=6x, 0 < x Find the derivative of the function, f) (x) = In(Vx2 8) Put the following human populations in order from the first to migrate out of Africa to the most recently established population based on % polymorphism. a) Europeans, East Asians, Africans b) Africans, East Asians, Europeans c) East Asians, Africans, Europeans d) Africans, Europeans, East Asians Budgeting process guidelines include: (Check all that apply.) -the opportunity to explain differences between actual and budgeted amounts. -attainable goals. -top-down budgeting. -budgetary slack. -participatory budgeting. Post-decision dissonance can influence consumer behavior because it creates discomfort that the consumer would like to reduce. attracts customers who are habitual buyers of other brands. increases the recall ability of the consumer for product attributes. decreases motivation to process information about other brands increases the ability of the consumer to process information. increases the ability of the consumer to process information. When using On-Demand instances in AWS, which of the following is a false statement about its cost?A. There is no upfront costs for the instanceB. You have to pay the termination fees if you terminate the instanceC. You are charged per second based on the hourly rateD. You pay for much you use. Suppose that, at a price index of 154, the quantity demanded of U.S. Real GDP is $10.0 trillion worth of goods. Do these data represent aggregate demand or a point on an aggregate demand curve? Explain. What electronic storage media will help Bill save his work and store his digital portfolio?Bill can use a ____ to save and store his digital portfolio. will only upvote if correct and fast4. The function f is defined by f(x) = (1+x) 1 The Maclaurin series for f is given by 1-2x + 3x-4x++ (-1)"(n+1)x + ... a) Use the ratio test to find the interval of convergence for the Maclaur which of these would not lead to greater educational investment? a) a lower discount rate in present value formulas. b) a higher earning differential between high school and college graduates. c) a longer earning horizon. d) an increase in the cost of education caused by lower college subsidies katerina runs 15 miles in 212 hours. what is the average number of minutes it takes her to run 1 mile? if our significance level is 5 nd our p-value is calculated as 0.016 we should _____. Likiang Company's sales are on credit. 60% of the credit sales are collected in the month of sale, 35% in the month following sale. The remainder is uncollectable. The following are budgeted sales data: January February March April Total Sales 60,000 70,000 50,000 30,000 Total cash receipts in March would be budgeted to be: Select one: O A. 30,000 O B. 60,500 O C. 54,500 OD. 66,500 Suppose you have two unrelated goods: a flash drive and a dog collar. What would be the CPED for these two items?Group of answer choicesIt is less than zeroIt is greater than zeroIt equals zeroIt is greater than 100 Recta de pendiente 14 que pasa por (3,0). which of these are carrying costs? select all that apply. multiple select question. a. incurring costs for replenishing b. inventory losing a sale because credit sales are not permitted c. paying for inventory insurance renting d. a warehouse for inventory storage T/F. The itoa function is similar to atoi but it works in reverse.