Havin’ trouble with these questions, please help

Answer:i think -81

Step-by-step explanation:3x (-3) = -9.        -9x(-3)=27.       27x(-3)= -81

Answer:

0.00005

Step-by-step explanation:

you move 5 decimal places left starting from 7 and right it as a decimal.

Ans=0.00007

Answer:

A. To find the acceleration, we need to take the derivative of the velocity function with respect to time:

a(t) = v'(t) = 2(pi) - cos(t(pi))

B. To find the minimum acceleration, we need to find the critical points of the acceleration function in the interval [0, 3].

a'(t) = sin(t(pi))

The critical points occur when sin(t(pi)) = 0, which means t = 0, 1, 2, 3. We need to evaluate the acceleration function at these points and at the endpoints of the interval:

a(0) = 2(pi) - cos(0) = 2(pi)

a(1) = 2(pi) - cos(pi) = pi + 2

a(2) = 2(pi) - cos(2pi) = 2(pi)

a(3) = 2(pi) - cos(3pi) = pi - 2

The minimum acceleration occurs at t = 3, with a minimum value of pi - 2.

C. To find the maximum velocity, we need to find the critical points of the velocity function in the interval [0, 2].

v'(t) = 2(pi) - cos(t(pi)) = 0

The critical points occur when cos(t(pi)) = 2(pi). We can solve for t as follows:

cos(t(pi)) = 2(pi)

t(pi) = arccos(2(pi))

t = arccos(2(pi))/pi ≈ 1.58

We need to evaluate the velocity function at these points and at the endpoints of the interval:

v(0) = -sin(0) = 0

v(1.58) ≈ 1.69

v(2) = (2(pi) - 5)(2) - sin(2(pi)) = 4(pi) - 10

The maximum velocity occurs at t = 1.58, with a maximum value of approximately 1.69.

The volume of the cube of 7 inches when calculated is 343 cubic inches

A cube is a three-dimensional solid figure that has six faces, each of which is a square.

All the edges of a cube are of equal length. In this case, each edge of the cube measures 7 inches.

To find the volume of a cube, we need to multiply the length, width, and height of the cube together.

Since all edges of the cube are of equal length, we can simply cube the length of one of the edges to find the volume.

Therefore, the volume of this cube is calculated by multiplying the length of one edge by itself three times:

Volume = 7 x 7 x 7 = 343 cubic inches.

So, the volume is 343 cubic inches.

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Step-by-step explanation:

that the answerrrrrrrrr

The function that expresses f(x) is f(x) = 1.99x + 3, and its graph is continuous.

A continuous function is one that doesn't have any sudden or unexpected changes in value. It means that if we make small enough changes to its input, the output will also change by a small amount.

We can express the total cost of an order as a function of the number of books sold, x, using the formula:

f(x) = 1.99x + 3

This function takes the number of books sold, multiplies it by the cost per book ($1.99), and adds a fixed fee of $3.

For example, if we sold 3 books, we can use the function to find the total cost:

f(3) = 1.99(3) + 3 = 9.97

This means that selling 3 books would cost $9.97 in total.

The graph of this function is continuous, which means that as we move along the x-axis, the y-values change smoothly and without any sudden jumps.

The term "continuous" refers to a function that can take on any value between two given points and can be broken down into infinitely many fractions and decimals.

In contrast, a discrete function can only take on specific values, usually whole numbers or integers.

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Answer: $1,282.31 in the account after 8 years.

Step-by-step explanation:

To calculate the future value of the investment, we can use the formula for compound interest:

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

where:

A = the future value of the investment

P = the principal amount (initial investment)

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the number of years

In this case, we have:

P = $1,000.00 (the initial deposit)

r = 3.44% = 0.0344 (the annual interest rate)

n = 12 (the number of times the interest is compounded per year, since it is compounded monthly)

t = 8 (the number of years)

So, plugging in the values:

A = $1,000.00 * (1 + 0.0344/12)^(12*8)

A = $1,000.00 * (1 + 0.0028666666666667)^96

A = $1,000.00 * 1.2823139327534472

A = $1,282.31 (rounded to the nearest cent)

Therefore, you will have approximately $1,282.31 in the account after 8 years.

115° is the value of external angle.

Where is exterior angle?

Angles that are outside of a polygon but parallel to its inner angles are said to be its outside angles. The total of the two internal opposite angles is the measure of an outside angle. A triangle's one side is extended to form the triangle's exterior angle.

                        Exterior angles are those that exist between an extended side and the side that is immediately adjacent. A triangle's outer angles all have measurements that are equal to the sum of their two opposite sides. inner perspectives.

  AD ║EG

∠BFC= 75°

∠EFB = 40°

∠FCD =  ( 40+75)

          = 115°

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The equation for the function is D(x) = 65 - 0.8x. Where 65 is the initial depth of the water and 0.8x is the amount by which the depth drops after x months.

What is a linear function?

A linear function is a mathematical function that has a constant rate of change or slope between the independent variable (x) and the dependent variable (y). It is a function that can be graphically represented as a straight line.

We can use a linear function to approximate the depth of the water in the reservoir x months after the start of the study, since the depth is dropping at a constant rate of 0.8 meters per month. Let D(x) be the depth of the water in meters x months after the start of the study. Then we have:

D(x) = 65 - 0.8x

where 65 is the initial depth of the water and 0.8x is the amount by which the depth drops after x months.

Therefore, the equation for the function is D(x) = 65 - 0.8x.

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Answer:

117

Step-by-step explanation:

If 30 out of 200 seventh-graders attend summer camp, we can estimate the proportion of seventh-graders who attend summer camp as 30/200 = 0.15.

To estimate how many seventh-graders out of the total of 780 are expected to attend summer camp, we can multiply this proportion by the total number of seventh-graders:

0.15 x 780 = 117

Therefore, we can estimate that about 117 seventh-graders are expected to attend summer camp.

Step-by-step explanation:

the width is 23.5ft and the length is 47ft

Answer:  any shape with four sides

Step-by-step explanation:

Answer: 4 sides

Step-by-step explanation: The only qualification for a shape to be called a quadrilateral is that it has 4 sides

Hope this helps :)

Answer:

The discount is $8.55, which is option C.

Step-by-step explanation:

To find the discount, we need to calculate 20% of the original price:

Discount = 20% x $42.75

Discount = $8.55

Therefore, the discount is $8.55, which is option C.

The tοtal change in reservοir height οver bοth years is a decrease οf 2 feet.

The tοtal change in reservοir height οver bοth years can be calculated by finding the difference between the final height and the initial height.

Let's assume that the initial height οf the reservοir was H.

After the lοng dry spell, the reservοir drοpped 6 feet, which means its height became H - 6.

Fοllοwing that, the reservοir rοse 4 feet, which means its height became (H - 6) + 4 = H - 2.

Therefοre, the tοtal change in reservοir height οver bοth years can be calculated as:

Tοtal change = Final height - Initial height

= (H - 2) - H

= -2

Sο the answer is C) -0+. The tοtal change in reservοir height is a decrease οf 2 feet.

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An equation in standard form passing through the points (3, -6) and (1, -2) is 2x + y = -3.

In Mathematics, the point-slope form of a straight line can be calculated by using the following mathematical expression:

y - y₁ = m(x - x₁) or [tex]y - y_1 = \frac{(y_2- y_1)}{(x_2 - x_1)}(x - x_1)[/tex]

Where:

At data point (3, -6), a linear equation in slope-intercept form for this line can be calculated by using the point-slope form as follows:

[tex]y - y_1 = \frac{(y_2- y_1)}{(x_2 - x_1)}(x - x_1)\\\\y +6 = \frac{(-2+6)}{(1 -3)}(x -3)[/tex]

y + 6 = -2(x - 3)

y = -2x + 3 - 6

y = -2x - 3

2x + y = -3

In this context, we can reasonably infer and logically deduce that an equation of the line that represents this table in standard form is 2x + y = -3.

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None of the trains had exactly 48 passengers, as none of the numbers in the stem leaf plot are equal to 48. The closest numbers are 45 and 49, but neither are exactly 48.

Passenger is an open source web application built on top of the popular Ruby on Rails web framework. It is designed to make it easy to deploy, manage, and monitor web applications in production. Passenger helps developers quickly deploy applications with minimal effort and maximum control. It can be used to control the entire process of deploying applications, from the initial code commit to the final running web server. Passenger simplifies and streamlines the process of deploying, configuring, and running web applications, allowing developers to focus on the application's features and features. Passenger also provides tools and features to help developers troubleshoot, monitor, and scale their applications.

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Mathematics provides a framework for developing critical thinking, problem-solving, and analytical skills that are valuable in many aspects of life.

What is mathematics?

Mathematics is a fundamental discipline that plays a crucial role in our daily lives and in shaping our understanding of the world.

Mathematics is a field of study that deals with the properties and relationships of numbers, quantities, shapes, and patterns. It involves using logical reasoning, abstraction, and symbolic manipulation to understand and solve problems related to these concepts.

Mathematics is important for many reasons. First and foremost, it is a fundamental tool for understanding and describing the world around us. It plays a crucial role in science, technology, engineering, economics, finance, and many other fields by providing tools for modeling and analyzing complex phenomena.

Mathematics is also essential for making accurate predictions and decisions based on data and evidence, as well as for designing and optimizing systems and processes.

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Answer:

627422410000

hope it helps

Answer:

90

Step-by-step explanation:

it is a square

in a square all angles are equal to 90 degrees

Frequency Distribution Table is down below.

Class Count Cumulative Frequency Table

160 - 180 3 3

181 - 201 5 8

202 - 222 14 22

223 - 243 14 36

244 - 264 10 46

265 - 285 2 48

286 - 306 1 49

307 - 327 1 50

Total 50     100

Here its peak is in between 202 to 243 frequency range. There are three extreme values that are 270, 295 and 325 pounds weight.

Median lies in the interval 223-243 and mean also lies in that interval. Maximum values lies in between 200 - 225 interval.

The distribution is left skewed.

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The inequality that determines the maximum number of speakers, x, Michael can buy is: B. $46.00 + $483.33 < $1,045.69

To determine the maximum number of speakers, x, Michael can buy without spending more money than he has in his account, we need to use the following inequality:

Total amount spent on TV and speakers ≤ amount of money in the account

We know that Michael has $1,045.69 in his account, and he will spend $483.33 on a new television. Let x be the maximum number of speakers he can buy. Each speaker costs $46.00, so the total amount spent on the speakers will be $46.00x. Thus, we can write the inequality as:

$483.33 + $46.00x ≤ $1,045.69

Simplifying this inequality, we get:

$46.00x ≤ $1,045.69 - $483.33

$46.00x ≤ $562.36

x ≤ $562.36 ÷ $46.00

x ≤ 12.20 (rounded to two decimal places)

So the maximum number of speakers Michael can buy without spending more money than he has in his account is 12.20. However, since he cannot buy a fractional number of speakers, he can only buy a maximum of 12 speakers.

Therefore, the correct inequality that determines the maximum number of speakers, x, Michael can buy without spending more money than he has in his account is:

B. $46.00 + $483.33 < $1,045.69

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Answer:

0.0093 square inches

Step-by-step explanation:

The domain = {x ∈ R : x ≠ 2} and the range = {g ∈ R : g ≠ 5} In light οf this, g(x) has a h value οf 2 and a k value οf 5.

The difference between bοth the highest & lοwest values in statistics fοr a particular data cοllectiοn is called the range. Fοr instance, if the data set is 2, 5, 8, 10, 3, then the range is 10 - 2 = 8.

The definitiοn οf the functiοn g(x) is.

g(x) = 1/(x - 2) + 5

As the denοminatοr οf a fractiοn cannοt be zerο, the dοmain οf g(x) includes all real integers with the exceptiοn οf x = 2.

The range οf g(x) can be fοund by cοnsidering the behaviοr οf the functiοn as x apprοaches infinity οr negative infinity. As x apprοaches infinity οr negative infinity, the value οf g(x) apprοaches 5 (since the 1/(x - 2) term becοmes negligible cοmpared tο 5). Therefοre, the range οf g(x) is all real numbers except values very clοse tο 5.

It is pοssible tο rewrite the functiοn g(x) as fοllοws:

g(x) = (1/(x - 2)) + 5

This is in the fοrm:

g(x) = a/(x - h) + k

Where a = 1, h = 2, and k = 5.

Therefοre, the h value fοr g(x) is 2, and the k value fοr g(x) is 5.

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Answer:

2 wholes 3 tenths and 5 hundredths

Step-by-step explanation:

Using simple interest his monthly installments are $1243.38

The amount on Simple interest is given by A = P(1 + rt) where

Now, since Justin purchased his dream car worth $18500 on a finance for 4 years. He was offered 6% interest rate. Assuming no other charges and no tax, we want to find his monthly installments.

His installments are his principal. so, making P subject of the formula, we have that

P = A/(1 + rt)

Given that

Substituting the vales of the variables into the equation, we have

P = A/(1 + rt)

P = $ 18500/(1 + 0.06 × 4)

P = $ 18500/(1 + 0.24)

P = $ 18500/1.24

P = $ 14919.35 per year

To find his monthly installments, we divide P by 12.

So, P' = P/12

= $ 14919.35/12

= $1243.38

So, his monthly installments are $1243.38

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The simulation suggests that the chef's estimation of 30% broccoli soup orders is reasonable, but actual orders will vary from one set of customers to the next.

The chef's estimation of 30% broccoli soup orders seems reasonable based on the probabilities given, but the actual number of broccoli soup orders will likely vary from one set of 10 customers to the next. To estimate the accuracy of the chef's estimation, she conducts a simulation by shuffling cards representing the soup choices and randomly selecting one for each of the 10 customers. She repeats this process five times.

Based on the simulation results, we can see that the actual number of broccoli soup orders varies quite a bit from the expected value of 1.5. However, this is to be expected due to the random nature of the simulation.

To further estimate the accuracy of the chef's estimation, we could calculate the mean and standard deviation of the results to get a better sense of the distribution of possible outcomes.

Overall, the simulation suggests that the chef's estimation of 30% broccoli soup orders is a reasonable estimate, but the actual number of broccoli soup orders will likely vary from one set of 10 customers to the next.

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why do we even need to know this stuff I think it's b