Answers
5. The minimum value of g(x) is -8.
The maximum value of g(x) is 17.
6. The average rate of change of the function g(x) over the interval [-2, 3] is 5.
How to determine the maximum and minimum value?By critically observing the table representing the function g(x), we can logically deduce the following minimum value and maximum value over the interval [-2, 3];
When x = -2, the minimum value of g(x) is equal to -8.
When x = 0, the maximum value of g(x) is equal to 17.
Question 6.
In Mathematics, the average rate of change of f(x) on a closed interval [a, b] is given by this mathematical expression:
Average rate of change = [f(b) - f(a)]/(b - a)
Next, we would determine the average rate of change of the function g(x) over the interval [-2, 3]:
a = -2; f(a) = -8
b = 3; f(b) = 17
Average rate of change = (17 + 8)/(3 + 2)
Average rate of change = 25/5
Average rate of change = 5
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Related Questions
7.5, 8.5, 14.5 are these can form a triangle?
Answers
No, the sides with lengths 7.5, 8.5, and 14.5 cannot form a triangle.
To form a triangle considering three lengths of sides, the sum of the lengths of any two sides must be greater than the length of the third side.
Checking the above condition
1. The sum of 7.5,8.5 is 16, which is greater than 14.5. So, the condition is satisfied.
2. The sum of 7.5, 14.5 is 22, which is greater than 8.5. So, the condition is satisfied.
3. The sum of 8.5 and 14.5 is 23, which is less than 7.5. The condition is not satisfied.
Since the sum of the two shorter sides 8.5 and 14.5 is not greater than the longest side 7.5 these three sides with given lengths cannot form a triangle.
Therefore, the sides with lengths 7.5, 8.5, and 14.5 cannot form a triangle.
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You are the architect for Pharaoh Khufu. He wants you to construct a square pyramid with a height of 100 m but you only have an limestone to fill a volume of 2,000,000 m³. How long should the sides of the square base be? Round your answer to the nearest hundredth.
Answers
The length of each side of the square base should be approximately 244.95 meters when rounded to the nearest hundredth.
To calculate the length of the sides of the square base of the pyramid, we can use the formula for the volume of a square pyramid:
V = (1/3) * (side length)^2 * height
Given that the volume of the pyramid is 2,000,000 m³ and the height is 100 m, we can substitute these values into the formula:
2,000,000 = (1/3) * (side length)^2 * 100
To isolate the side length, we can rearrange the equation:
(side length)^2 = (2,000,000 * 3) / 100
(side length)^2 = 60,000
Taking the square root of both sides, we find:
side length ≈ √60,000
side length ≈ 244.95
Therefore, the length of each side of the square base should be approximately 244.95 meters when rounded to the nearest hundredth.
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Please help. Any unnecessary answers will be reported. Show your work.
King Arthur's Sword has a blade that is made of a regular hexagon and a regular pentagon. What is the amplitude of the tip of King Arthur's Sword?
Answers
Answer: Amplitude is 108 degrees
Step-by-step explanation:
To determine the amplitude of the tip of King Arthur's Sword, we need to understand the shape of the sword's blade, which consists of a regular hexagon and a regular pentagon.
A regular hexagon has six equal sides and six equal angles, each measuring 120 degrees. The regular pentagon, on the other hand, has five equal sides and five equal angles, each measuring 108 degrees.
Since the tip of the sword is formed by the meeting point of the hexagon and pentagon, it will be at the apex of the pentagon. The apex of the pentagon will have an angle of 108 degrees.
I hope this helps!!!
What is the exact length of HG in cms
Answers
The given triangle is a right angled triangle, therefore the rules of basic Trigonometry can be used here to find the solution.
Considering angle G, lets find sin 45°[tex]\qquad\displaystyle \tt \dashrightarrow \: \sin(45 \degree) = \frac{opposite \:\: side}{hypotenuse} [/tex]
[ sin 45° = 1/√2 ]
[tex]\qquad\displaystyle \tt \dashrightarrow \: \frac{1}{ \sqrt{2} } = \frac{b}{x} [/tex]
[tex]\qquad\displaystyle \tt \dashrightarrow \: x = b \sqrt{2} \: \: cm[/tex]
So, the side HG is b√2 cm long
Question Number 7 of 10 - 8th Grade Math
Which graph shows only a translation?
Answers
The graph that shows only a translation is (c)
How to determine the graph that shows only a translation?From the question, we have the following parameters that can be used in our computation:
The list of options
The general rule of translation it that
The image and the preimage have the same orientationThe image and the preimage have the same side lengthsThe image and the preimage have the same angle measuresUsing the above as a guide, we have the following:
the graph that shows only a translation is (c)
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An ethical hacker, also referred to as a white hat hacker, is an information security expert who systematically attempts to penetrate a computer system, network, application or other computing resource on behalf of its owners. The purpose of ethical hacking is to evaluate the security of and identify vulnerabilities in systems, networks or system infrastructure. It includes finding and attempting to exploit any vulnerabilities to determine whether unauthorized access or other malicious activities are possible.
An ethical hacker is required to randomly guess the correct pin code that consists of the number 0 through 9 that must be entered in the correct order to access a company system.
1. What is the probability that the ethical hacker will guess the pin code correctly on the first try?
2. There are many variations of this guess. Assuming the primary variation allows the ethical hacker to guess correctly if the four-digit in the number are selected in any order as long as they are the same four digits as set by the IT security of the company.
For example, if the ethical hacker picks four digits making the number 2376, then the he will guest it right if 2376, 3726, 6327, 7632, and so forth, are entered. Consider the following four different versions of his presumptions.
(a) All four digits are unique (e.g. 1234)
(b) Exactly one of the digits appears twice (e.g. 2334, 8185)
(c) Two digits each appear twice (e.g. 1212, 8855)
(d) One digit appears three times (e.g. 2226, 8188)
Find the probability that the ethical hacker will successfully guess the accurate pin code in the first try for each of these four situations.
Show the necessary steps and explanation for the four presumptions stated above.
Answers
Answer: What is the probability that the ethical hacker will guess the pin code correctly on the first try?
Since the pin code consists of 10 possible digits (0 through 9), the probability of guessing the correct pin code on the first try is 1 in 10. This is because there is only one correct pin code out of the 10 possible options.
Therefore, the probability is 1/10 or 0.1 (or 10%).
Calculating the probability for each of the four situations:
(a) All four digits are unique (e.g., 1234):
In this case, there are 10 options for the first digit, 9 options for the second digit (since it can't be the same as the first), 8 options for the third digit, and 7 options for the fourth digit. The total number of possible combinations is given by:
10 × 9 × 8 × 7 = 5040
So, there are 5040 possible four-digit combinations when all digits are unique.
The probability of guessing the correct pin code on the first try in this situation is 1 in 5040, or 1/5040.
(b) Exactly one of the digits appears twice (e.g., 2334, 8185):
In this case, we have two scenarios to consider:
Scenario 1: The repeated digit is the first digit:
The first digit can be chosen in 10 ways, the second digit (repeated) can be chosen in 9 ways, and the remaining two distinct digits can be chosen in 8 and 7 ways, respectively. So, the total number of possible combinations is:
10 × 9 × 8 × 7 = 5040
Scenario 2: The repeated digit is not the first digit:
The first digit can be chosen in 9 ways (excluding the repeated digit), the repeated digit can be chosen in 10 ways, and the remaining two distinct digits can be chosen in 8 and 7 ways, respectively. So, the total number of possible combinations is:
9 × 10 × 8 × 7 = 5040
Combining both scenarios, we get a total of 2 × 5040 = 10080 possible combinations when exactly one of the digits appears twice.
The probability of guessing the correct pin code on the first try in this situation is 1 in 10080, or 1/10080.
(c) Two digits each appear twice (e.g., 1212, 8855):
In this case, there are two scenarios to consider:
Scenario 1: The two pairs of digits are different:
The first pair of digits can be chosen in 10 ways, the second pair of digits can be chosen in 9 ways, and the order of the pairs can be switched. So, the total number of possible combinations is:
10 × 9 × 2 = 180
Scenario 2: The two pairs of digits are the same:
The pair of digits can be chosen in 10 ways, and the order of the digits can be switched. So, the total number of possible combinations is:
10 × 1 = 10
Combining both scenarios, we get a total of 180 + 10 = 190 possible combinations when two digits each appear twice.
The probability of guessing the correct pin code on the first try in this situation is 1 in 190, or 1/190.
(d) One digit appears three times (e.g., 2226, 8188):
In this case, there are two scenarios to consider:
Scenario 1: The repeated digit is the first digit:
The first digit can be chosen in 10 ways, and the remaining two distinct digits can be chosen in 9 and 8 ways, respectively. So, the total number of possible combinations is:
10 × 9 × 8 = 720
Scenario 2: The repeated digit is not the first digit:
The first digit can be chosen in 9 ways (excluding the repeated digit), and the repeated digit can be chosen in 10 ways. The remaining distinct digit can be chosen in 8 ways. So, the total number of possible combinations is:
9 × 10 × 8 = 720
Combining both scenarios, we get a total of 2 × 720 = 1440 possible combinations when one digit appears three times.
The probability of guessing the correct pin code on the first try in this situation is 1 in 1440, or 1/1440.
To summarize, the probabilities for each of the four situations are:
(a) All four digits are unique: 1/5040
(b) Exactly one of the digits appears twice: 1/10080
(c) Two digits each appear twice: 1/190
(d) One digit appears three times: 1/1440
Assumptions: Tax depreciation is straight-line over three years. Pre-tax salvage value is 25 in Year 3 and 50 if the asset is scrapped in Year 2. Tax on salvage value is 40% of the difference between salvage value and book value of the investment. The cost of capital is 20%.
Answers
Based on the given assumptions and calculations, the net present value (NPV) of the investment in the new piece of equipment is -$27,045.76, indicating that the investment is not favorable.
To calculate the after-tax cash flows for each year and evaluate the investment decision, let's use the following information:
Assumptions:
Tax depreciation is straight-line over five years.
Pre-tax salvage value is $10,000 in Year 5 and $15,000 if the asset is scrapped in Year 4.
Tax on salvage value is 30% of the difference between salvage value and book value of the investment.
The cost of capital is 12%.
Given:
Initial investment cost = $50,000
Useful life of the equipment = 5 years
To calculate the depreciation expense each year, we divide the initial investment by the useful life:
Depreciation expense per year = Initial investment / Useful life
Depreciation expense per year = $50,000 / 5 = $10,000
Now, let's calculate the book value at the end of each year:
Year 1:
Book value = Initial investment - Depreciation expense per year
Book value [tex]= $50,000 - $10,000 = $40,000[/tex]
Year 2:
Book value = Initial investment - (2 [tex]\times[/tex] Depreciation expense per year)
Book value [tex]= $50,000 - (2 \times$10,000) = $30,000[/tex]
Year 3:
Book value = Initial investment - (3 [tex]\times[/tex] Depreciation expense per year)
Book value = $50,000 - (3 [tex]\times[/tex] $10,000) = $20,000
Year 4:
Book value = Initial investment - (4 [tex]\times[/tex] Depreciation expense per year)
Book value [tex]= $50,000 - (4 \times $10,000) = $10,000[/tex]
Year 5:
Book value = Initial investment - (5 [tex]\times[/tex] Depreciation expense per year)
Book value [tex]= $50,000 - (5 \times $10,000) = $0[/tex]
Based on the assumptions, the salvage value is $10,000 in Year 5.
If the asset is scrapped in Year 4, the salvage value is $15,000.
To calculate the tax on salvage value, we need to find the difference between the salvage value and the book value and then multiply it by the tax rate:
Tax on salvage value = Tax rate [tex]\times[/tex] (Salvage value - Book value)
For Year 5:
Tax on salvage value[tex]= 0.30 \times ($10,000 - $0) = $3,000[/tex]
For Year 4 (if scrapped):
Tax on salvage value[tex]= 0.30 \times ($15,000 - $10,000) = $1,500[/tex]
Now, let's calculate the after-tax cash flows for each year:
Year 1:
After-tax cash flow = Depreciation expense per year - Tax on salvage value
After-tax cash flow = $10,000 - $0 = $10,000
Year 2:
After-tax cash flow = Salvage value - Tax on salvage value
After-tax cash flow = $0 - $0 = $0
Year 3:
After-tax cash flow = Salvage value - Tax on salvage value
After-tax cash flow = $0 - $0 = $0
Year 4 (if scrapped):
After-tax cash flow = Salvage value - Tax on salvage value
After-tax cash flow = $15,000 - $1,500 = $13,500
Year 5:
After-tax cash flow = Salvage value - Tax on salvage value
After-tax cash flow = $10,000 - $3,000 = $7,000
Now, let's calculate the net present value (NPV) using the cost of capital of 12%.
We will discount each year's after-tax cash flow to its present value using the formula:
[tex]PV = CF / (1 + r)^t[/tex]
Where:
PV = Present value
CF = Cash flow
r = Discount rate (cost of capital)
t = Time period (year)
NPV = PV Year 1 + PV Year 2 + PV Year 3 + PV Year 4 + PV Year 5 - Initial investment
Let's calculate the NPV:
PV Year 1 [tex]= $10,000 / (1 + 0.12)^1 = $8,928.57[/tex]
PV Year 2 [tex]= $0 / (1 + 0.12)^2 = $0[/tex]
PV Year 3 [tex]= $0 / (1 + 0.12)^3 = $0[/tex]
PV Year 4 [tex]= $13,500 / (1 + 0.12)^4 = $9,551.28[/tex]
PV Year 5 [tex]= $7,000 / (1 + 0.12)^5 = $4,474.39[/tex]
NPV = $8,928.57 + $0 + $0 + $9,551.28 + $4,474.39 - $50,000
NPV = $22,954.24 - $50,000
NPV = -$27,045.76
The NPV is negative, which means that based on the given assumptions and cost of capital, the investment in the new piece of equipment would result in a net loss.
Therefore, the investment may not be favorable.
Please note that the calculations above are based on the given assumptions, and additional factors or considerations specific to the business should also be taken into account when making investment decisions.
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The complete question may be like :
Assumptions: Tax depreciation is straight-line over five years. Pre-tax salvage value is $10,000 in Year 5 and $15,000 if the asset is scrapped in Year 4. Tax on salvage value is 30% of the difference between salvage value and book value of the investment. The cost of capital is 12%.
You are evaluating an investment in a new piece of equipment for your business. The initial investment cost is $50,000. The equipment is expected to have a useful life of five years.
Using the given assumptions, calculate the after-tax cash flows for each year and evaluate the investment decision by calculating the net present value (NPV) using the cost of capital of 12%.
Can someone help me with 12 & 13.
Answers
a) The volume of the hemisphere is V₁ = 261.80 km³
b) The volume of the hemisphere is V₂ = 1,526.81 feet³
Given data ,
a)
Let the volume of the hemisphere be represented as V₁
where the radius of the hemisphere is r₁ = 5 km
And , volume of hemisphere is V = ( 2/3 )πr³
On simplifying , we get
V₁ = ( 2/3 )π ( 5 )³
V₁ = 261.80 km³
b)
Let the volume of the hemisphere be represented as V₂
The diameter of the hemisphere = 18 feet
where the radius of the hemisphere is r₁ = 9 feet
And , volume of hemisphere is V = ( 2/3 )πr³
On simplifying , we get
V₂ = ( 2/3 )π ( 9 )³
V₂ = 1,526.81 feet³
Hence , the volume of the hemisphere is solved
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Molly used 192 beads to make a necklace AND a bracelet. It takes 5 times as many beads to make a necklace as it does a bracelet. How many beads are used to make the necklace?
Answers
Examining the word problem we can say that, Molly used 160 beads to make the necklace.
How to find the number of beadsLet's assume the number of beads used to make the bracelet is x.
We also know that Molly used a total of 192 beads for both the necklace and the bracelet. and It takes 5 times as many beads to make a necklace as it does a bracelet, So,
x + 5x = 192
6x = 192
solve for x
x = 192 / 6
x = 32
Molly used 32 beads to make the bracelet.
number of beads used to make the necklace
Number of beads used for the necklace = 5 * 32
Number of beads used for the necklace = 160
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What is the meaning of "free variables"?
Answers
Free variables are variables used to represent parameters
What are free variables?Free variables are placeholders or symbols in mathematics and logic that are not constrained by any quantifiers or other specified conditions within an expression, formula, or equation.
When the expression is evaluated, they stand for values that can change or be given different values. In equations or functions, free variables are frequently employed to represent unknowns or parameters.
Free variables enable flexibility and generality in mathematical reasoning since they can be given various values to investigate various situations or solutions. In contrast, bound variables have a specific scope within a certain context or statement and are constrained by quantifiers.
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Martin's school is due west of his house and due south of his friend Hayley's house. The
distance between the school and Hayley's house is 12 kilometers and the straight-line
distance between Martin's house and Hayley's house is 13 kilometers. How far is Martin's
house from school?
Answers
The distance between Martin's house and the school is 5 kilometers.
How to solve for distanceTo find the distance between Martin's house and the school, we can use the Pythagorean theorem.
Let's represent the distance between Martin's house and the school as x kilometers.
According to the given information:
Distance between Martin's house and Hayley's house (hypotenuse) = 13 kilometers
Distance between the school and Hayley's house (one side of the right triangle) = 12 kilometers
Using the Pythagorean theorem, we have:
x[tex]x^2 + 12^2 = 13^2[/tex]
Simplifying the equation:
[tex]x^2 + 144 = 169x^2 = 169 - 144x^2 = 25[/tex]
Taking the square root of both sides:
x = √25
x = 5
Therefore, the distance between Martin's house and the school is 5 kilometers.
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An expression is shown. 2 + 2(x – 3) – 5x Which expression is equivalent to the expression shown? –3x – 4 –3x – 1 –x – 12 –x – 3
Answers
The other options provided, -3x - 1, -x - 12, and -x - 3, do not match the simplified form of the given expression. Only -3x - 4 corresponds to the original expression after simplification. It is important to carefully distribute and combine like terms to simplify expressions correctly.
The expression shown is 2 + 2(x – 3) – 5x. To find an equivalent expression, we need to distribute the 2 to both terms inside the parentheses, resulting in 2x - 6. Now we can simplify the expression further:
2 + 2x - 6 - 5x
Combining like terms, we have:
(2x - 5x) + (2 - 6)
This simplifies to:
-3x - 4
Hence, the expression -3x - 4 is equivalent to 2 + 2(x – 3) – 5x.
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50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answers
The length of y in the right triangle is 15 units.
How to find the side of a right triangle?A right angle triangle is a triangle that has one of its angles as 90 degrees.
The sum of angles in a triangle is 180 degrees.
The side y in the triangle XYZ can be found using trigonometric ratios as follows:
Therefore,
sin 45 = opposite / hypotenuse
opposite sides = y
hypotenuse side = 15√2
sin 45 = y / 15√2
cross multiply
y = 15√2 × sin 45
y = 15√2 × 1 / √2
y = 15 units
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A group of students was asked to pick a favorite primary color. The results are shown in the table.
Red Green Blue Total Male 12 24 4 40 Female 15 30 5 50 Total 27 54 9 90
Question
Which statement correctly explains the association between being male and favoring the color blue?
Answer options with 5 options
A.
There is a negative association because the number of males who responded to the survey is less than the number of females.
B.
There is a negative association because the number of males who chose blue is less than the number of females who chose blue.
C.
There is a negative association because the number of males who chose blue is the smaller than the number of males who chose the other colors.
D.
There is no association because the percent of males who chose blue is equal to the percent of females that chose blue.
E.
There is no association because the percent of individuals who are male and chose blue is not equal to the percent of individuals who are female and chose blue.
Answers
The correct statement that explains the association between being male and favoring the color blue is:
B. There is a negative association because the number of males who chose blue is less than the number of females who chose blue.
In the given table, it can be observed that out of the total 90 students surveyed, 9 students (4 males and 5 females) decided the color blue as their favorite primary color. Since the number of males (4) who selected blue is less than the number of females (5) who chose blue, there is a negative association between being male and favoring the color blue.
find the unit vector of n=(4,-3)
Answers
The unit vector for n = (4, -3) is V = (4/5, -3/5)
How to find the unit vector for the given vector?An unit vector will be a vector that has the same direction than the given one, but a magnitude of 1 unit.
Then we can define the vector V = k*n
Where k > 0 is a real number, then the unit vector is:
V = (4k, -3k)
But notice that this must have a magnitude of 1, then:
1 = √( (4k)² + (-3k)²)
1 = √25k²
1 = 5k
1/5 = k
Then the unit vector is:
V = (4/5, -3/5)
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What is the radian measure of a 45 degree angle in a circle of radius 24 ft
Answers
To convert from degrees to radians, we use the conversion factor that 180 degrees is equal to π radians (or π/180 radians per degree).
Given that the angle is 45 degrees, we can calculate the radian measure as follows:
Radian measure = (45 degrees) * (π/180 radians per degree)
Radian measure = 45π/180
Simplifying further:
Radian measure = π/4
Therefore, the radian measure of a 45 degree angle is π/4.
4)Does this shape belong in a group of shapes that have more than one pair of
perpendicular sides?
Use the drop-down menus to explain your answer.
4) Click the arrows to choose an answer from each menu.
The number of right angles in this shape is Choose....
meet at a right angle is Choose....
perpendicular sides in this shape. This shape
shapes that have more than one pair of perpendicular sides.
. Each pair of sides that
▾ of
in a group of
.There Choose...
Choose...
Answers
No, this shape does not belong in a group of shapes that have more than one pair of perpendicular sides.
Does the shape have > one pair of perpendicular sides?In order to determine if the shape belongs to a group of shapes with more than one pair of perpendicular sides, we need to examine the number of right angles in the shape.
A right angle is a 90-degree angle, and shapes with perpendicular sides have right angles at their intersections. By counting the number of right angles in the shape, we can determine if it has more than one pair of perpendicular sides.
If the shape has only one right angle, then it does not have more than one pair of perpendicular sides. But if it has two or more right angles, then it would belong to the group of shapes that have more than one pair of perpendicular sides.
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WILL GIVE BRAINLIEST TO CORRECT ANSWER!!!
This scale drawing shows a reduction in a figure.
What is the value of x?
Enter your answer as a decimal in the box.
X =
Answers
The value of x for the second triangle if it is the reduction of the first drawing is 6.3 feet.
Given two triangles.
Also given that, the scale drawings given are the reduction of the figure.
Most probably, the second triangle must be formed after a reduction with a scale factor of k.
Let k be the required scale factor.
The value of k can be found by taking the ratio of the corresponding sides.
k = 5.2 / 10.4
= 0.5
So all the corresponding sides will be half of the first triangle.
x = 0.5 × 12.6
= 6.3 feet
Hence the value of x is 6.3 feet.
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Use the space below to show your work.
45 points PLEASE HELP
Answers
The total number of each type of ball:
Football: Given as 8
Basketball: 18
Baseball: 40
Softball: 15
For basketball:
2 + 2(8) = 18
First, we evaluate the expression inside the parentheses: 2(8) = 16
Then, we add 2 to the result: 16 + 2 = 18
So, the total number of basketballs is 18.
For baseball:
5(8) = 40
We simply multiply 5 by 8 to get the total number of baseballs, which is 40.
For softball:
6 + 1/2(18) = 24
First, we evaluate the expression inside the parentheses: 1/2(18) = 9
Then, we add 6 to the result: 9 + 6 = 15
So, the total number of softballs is 15.
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Don't forget to show your work. Thank you!
Answers
The probability that a point chosen randomly inside the rectangle and is inside the Square or Trapezoid is 2/15.
We know that, probability of an event
= Number of favourable outcomes/Total number of outcomes.
Here, area of a rectangle = Length × Breadth
= 15×8
= 120 square units
Area of a triangle = 1/2 × Base × Height
= 1/2 ×(√10²-6²)×6
= 0.5×8×6
= 24 square units
Area of a trapezium = 1/2 (Sum of parallel sides)×Height
= 1/2 ×(5+7)×2
= 12 square units
Area of a square = side² = 2²
= 4 square units
(a) Probability of landing in trapezium or Square = 12/120 + 4/120
= 16/120
= 2/15
(b) Probability of landing inside the rectangle but outside the triangle = 16/120
= 2/15
Therefore, the probability that a point chosen randomly inside the rectangle and is inside the Square or Trapezoid is 2/15.
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A refrigerator and 2 fans cost $1219. 2 refrigerators and 3 fans cost $2155. Find the cost of 1 refrigerator.
Answers
Answer:
$653
Step-by-step explanation:
:]
Let's use x to represent the cost of one refrigerator and y to represent the cost of one fan.
The equations become:
Equation 1: x + 2y = 1219
Equation 2: 2x + 3y = 2155
Using the same substitution method:
From Equation 1, we have:
x = 1219 - 2y
Substitute this expression for x in Equation 2:
2(1219 - 2y) + 3y = 2155
Simplify the equation:
2438 - 4y + 3y = 2155
-y = 2155 - 2438
-y = -283
===> y = 283
Now substitute the value of y back into Equation 1 to find x:
===> x + 2(283) = 1219
===> x + 566 = 1219
===> x = 1219 - 566
===> x = 653
Therefore, the cost of one refrigerator is $653.
Which expression is equal to x-9/x-4 + x^2-x+5/x-4
Answers
Answer: The expression can be simplified by combining the fractions with a common denominator:
(x - 9)/(x - 4) + (x^2 - x + 5)/(x - 4)
To add these fractions, we need to find a common denominator, which in this case is (x - 4). Therefore, we can rewrite each fraction with the common denominator:
[(x - 9) + (x^2 - x + 5)] / (x - 4)
Simplifying the numerator:
(x - 9 + x^2 - x + 5) / (x - 4)
Combining like terms:
(x^2 - 2x - 4) / (x - 4)
Hence, the simplified expression is (x^2 - 2x - 4) / (x - 4).
a. Prices at Store A are 21% higher than at Store B
i. If the price at store A was $583, what was the price at store B?
ii. If the price at store B was $1200, what was the price at store A?
b. If there were 11,000 members in 2020 and 12,500 in 2021, what was the percent increase?
Answers
The answers are given as:
Ai. The price at Store B would be $583 / 1.21 = $481.82
ii. The price at Store A would be $1200 * 1.21 = $1452.
b. The percent increase in membership from 2020 to 2021 is 13.64%
How to solveA.
i. If the price at Store A was $583, the price at Store B would be $583 / 1.21 = $481.82 (approximately).
ii. If the price at Store B was $1200, the price at Store A would be $1200 * 1.21 = $1452.
b. The percent increase in membership from 2020 to 2021 is ((12,500 - 11,000) / 11,000) * 100 = 13.64% (approximately).
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Can someone help me with 12 & 13.
Directions: Find the volume of each figure. Round to the nearest hundredth when necessary.
Answers
12) Volume of semi - sphere = 261.67 km³
13) Volume of semi - sphere = 8574.29 feet³
We have to given that;
12) Radius of sphere = 5 km
13) Radius of sphere = 16 feet
Since, We know that;
Volume of sphere = 4/3 πr³
Hence, We get;
Volume of semi - sphere = 2/3πr³
12) Here, Radius of sphere = 5 km
Volume of semi - sphere = 2/3πr³
Volume of semi - sphere = 2/3 × 3.14 × 5³
Volume of semi - sphere = 261.67 km³
13) Here, Radius of sphere = 16 feet
Volume of semi - sphere = 2/3πr³
Volume of semi - sphere = 2/3 × 3.14 × 16³
Volume of semi - sphere = 8574.29 feet³
Thus, We get;
12) Volume of semi - sphere = 261.67 km³
13) Volume of semi - sphere = 8574.29 feet³
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the next 3 terms of 10,13,17,238
Answers
Derrick Rolls a die many times and Records the number of times he rolls a three arrange the following situations in order from the situation that gets the largest difference between relative frequency and actual probability to the situation that gives the smallest difference
Answers
The order from the situation with the largest difference between relative frequency and actual probability to the situation with the smallest difference would be:
Situation 1: Derrick rolls the die 10 times.
Situation 2: Derrick rolls the die 100 times.
Situation 3: Derrick rolls the die 1,000 times.
Situation 4: Derrick rolls the die 10,000 times.
Situation 5: Derrick rolls the die 1,000,000 times.
To determine the order of situations from the largest difference between relative frequency and actual probability to the smallest difference, we need to consider the concept of relative frequency and actual probability.
Relative frequency refers to the observed proportion of an event occurring in an experiment or trial, while actual probability represents the theoretical or expected probability of that event occurring.
Situation 1: Derrick rolls the die 10 times.
In this situation, the relative frequency of rolling a three can vary, but with a limited number of trials, the relative frequency might not accurately reflect the actual probability. Therefore, the difference between relative frequency and actual probability is likely to be larger compared to situations with more trials.
Situation 2: Derrick rolls the die 100 times.
With a larger number of trials, the relative frequency is expected to converge towards the actual probability. The difference between relative frequency and actual probability would likely be smaller compared to the previous situation.
Situation 3: Derrick rolls the die 1,000 times.
Increasing the number of trials further enhances the convergence of relative frequency to the actual probability. The difference between relative frequency and actual probability would be smaller than in the previous two situations.
Situation 4: Derrick rolls the die 10,000 times.
With an even larger number of trials, the relative frequency becomes more reliable and closely approximates the actual probability. The difference between relative frequency and actual probability would be smaller compared to the previous situations.
Situation 5: Derrick rolls the die 1,000,000 times.
In this situation, the large number of trials greatly increases the reliability and accuracy of the relative frequency. The observed relative frequency is expected to be very close to the actual probability, resulting in the smallest difference between the two.
Therefore, the order from the situation with the largest difference between relative frequency and actual probability to the situation with the smallest difference would be:
Situation 1: Derrick rolls the die 10 times.
Situation 2: Derrick rolls the die 100 times.
Situation 3: Derrick rolls the die 1,000 times.
Situation 4: Derrick rolls the die 10,000 times.
Situation 5: Derrick rolls the die 1,000,000 times.
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Need help with proofs, anyone know how?
Answers
Segments MS and QS are therefore congruent by the definition of bisector. Therefore, the correct answer option is: D. MS and QS.
What is a perpendicular bisector?In Mathematics and Geometry, a perpendicular bisector is a line, segment, or ray that bisects or divides a line segment exactly into two (2) equal halves and forms an angle that has a magnitude of 90 degrees at the point of intersection.
This ultimately implies that, a perpendicular bisector bisects a line segment exactly into two (2) equal halves, in order to form a right angle that has a magnitude of 90 degrees at the point of intersection.
Since line segment NS is a perpendicular bisector of isosceles triangle MNQ, we can logically deduce the following congruent relationships;
MS ≅ QSNS ≅ RSMN ≅ QN ∠NMS and ∠NQSΔMNS ≅ ΔQNSRead more on perpendicular bisectors here: brainly.com/question/19154899
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Complete Question:
The proof that ΔMNS ≅ ΔQNS is shown. Given: ΔMNQ is isosceles with base MQ, and NR and MQ bisect each other at S. Prove: ΔMNS ≅ ΔQNS
We know that ΔMNQ is isosceles with base MQ. So, MN ≅ QN by the definition of isosceles triangle. The base angles of the isosceles triangle, ∠NMS and ∠NQS, are congruent by the isosceles triangle theorem. It is also given that NR and MQ bisect each other at S. Segments _____ are therefore congruent by the definition of bisector. Thus, ΔMNS ≅ ΔQNS by SAS.
NS and NS
NS and RS
MS and RS
MS and QS
line p is parallel to line q and both these lines are intersected by transversal t show workkkkkk
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The value of x is equal to 10 degrees.
What is the Alternate Interior Angles Theorem?In Mathematics and Geometry, the Alternate Interior Angles Theorem states that when two (2) parallel lines are cut through by a transversal, the alternate interior angles that are formed are congruent:
By applying the alternate interior angles theorem to parallel lines p and q, we have the following congruent angles:
(5x - 65) = (x - 25)
5x - x = 65 - 25
4x = 40
x = 40/4
x = 10 degrees.
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Find the values of x and y with the answers in simplest radical form
Answers
The values of x and y in simplest radical form are :
5) x = 3 and y = 3√3
6) x = 5√3 and y = 10√3
7) x = 21 and y = 14√3
Given are three right angled triangles, whose angles are 30° - 60° - 90°.
The measures of sides for a 30° - 60° - 90° triangle is in the ratio 1 :√3 :2.
That is if length of the shorter leg which is the side opposite to 30° is k, then the length of the longer leg, which is the side opposite 60° will be √3k and the length of the hypotenuse, which is the side opposite to 90° will be 2k.
5) Using the above fact, here,
2k = 6
⇒ k = 6/2 = 3
So, x = 3 and y = 3√3
6) √3 k = 15
k = 15 /√3 = 5√3
So, x = 5√3 and y = 2 × 5√3 = 10√3
7) k = 7√3
So, x = √3 × 7√3 = 21
y = 2 × 7√3 = 14√3
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The table below shows the values of f(x) and g(x) for different values of x. One of the functions is a quadratic function, and the other is an exponential function. Which function is most likely increasing quadratically?
x f(x) g(x)
1 3 3
2 6 9
3 11 27
4 18 81
5 27 243
f(x), because it grows faster than g(x)
g(x), because it will not intersect f(x)
g(x), because it grows slower than f(x)
f(x), because it grows slower than g(x)
Answers
f(x) is the quadratic function.
g(x) is tripling its output for each 1-unit increase in x and g(x) = 3^x.
A quadratic function always grows more slowly than an exponential function.
So the best answer is:
f(x), because it grows slower than g(x)