can someone help me?​

Can Someone Help Me?

Answers

Answer 1

Answer:12

Step-by-step explanation:


Related Questions

The ratio of m angle wxz to m angle zxy is 11:25. what is m angle zxy

Answers

The measure of angle zxy is 125 degrees.

To solve the problem, we can use the fact that the sum of the measures of two adjacent angles is 180 degrees. Let's call the measure of angle zxy "x".

We know that the ratio of m angle wxz to m angle zxy is 11:25, which means that:

m angle wxz : m angle zxy = 11 : 25

We can write this as an equation:

m angle wxz / m angle zxy = 11/25

We also know that the two angles are adjacent, so their measures add up to 180 degrees:

m angle wxz + m angle zxy = 180

Now we can use these two equations to solve for x:

m angle wxz / x = 11/25

m angle wxz = (11/25)x

Substituting this into the second equation:

(11/25)x + x = 180

(36/25)x = 180

x = (25/36) * 180

x = 125

Therefore, the measure of angle zxy is 125 degrees.

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The first floor of a tiny house has has a length of 11 feet. The width of the kitchen if is 7 feet and the width of the bathroom is 4 feet. The expression 11(7+4) represents the total area in square feet. Write an expression to represent the total area as the sum of the areas of each room

Answers

The total area of the first floor of the tiny house is 121 square feet

The total area of the first floor of the tiny house can be expressed as the sum of the areas of each room. The area of a rectangle is calculated by multiplying the length by the width. Therefore, we can write:

Total area = Area of kitchen + Area of bathroom

The area of the kitchen is given by the product of the length and the width of the kitchen, which is 11 feet and 7 feet, respectively. Therefore, the area of the kitchen can be written as:

Area of kitchen = 11 x 7 = 77 square feet

Similarly, the area of the bathroom is given by the product of the length and the width of the bathroom, which is 11 feet and 4 feet, respectively. Therefore, the area of the bathroom can be written as:

Area of bathroom = 11 x 4 = 44 square feet

Substituting these expressions into the equation for the total area, we get:

Total area = Area of kitchen + Area of bathroom

= 77 + 44

= 121 square feet

Therefore, the total area of the first floor of the tiny house is 121 square feet, which can also be expressed as the sum of the areas of the kitchen and bathroom.

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Find the slope of the line

Answers

Answer:

m = -2

Step-by-step explanation:

We Know

Slope = rise/run or (y2 - y1) / (x2 - x1)

Pick 2 points (-3,2) (-2,0)

We see the y decrease by 2, and the x increase by 1, so the slope is

m = -2

The slope is -2 that’s the answer

Help me with these questions pls

Answers

The volume of the cones are;

1. 84. 78 in³

2.  564. 15 ft³

3.  4710 yd³

How to determine the value

The formula for calculating the volume of a cone is expressed as;

V = 1/3 πr²h

Given that;

r is the radius of the cone.h is the height of the cone

From the information given, we have;

1. Volume = 1/3 × 3.14 × 3² × 9

Multiply the values and find the square

Volume = 254. 34/3

divide the values

Volume = 84. 78 in³

2. Volume = 1/3 × 3.14 × 7² × 11

Multiply the values

Volume = 1692. 46/3

Volume = 564. 15 ft³

3. Volume = 1/3 × 3.14 × 15² × 20

Multiply the values

Volume = 4710 yd³

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A satellite orbiting Earth travels 4.95×10^7 meters for each orbit. It takes 6,600 seconds to make one orbit. What is the speed of the satellite in meters per second? Give your answer in standard form.

Answers

The value of the speed of the satellite in meters per second is,

⇒ Speed = 7.5 x 10³ m /sec

We have to given that;

A satellite orbiting Earth travels 4.95×10⁷ meters for each orbit.

And, It takes 6,600 seconds to make one orbit.

Hence, the speed of the satellite in meters per second is,

⇒ Speed = Distance / Time

⇒ Speed = 4.95×10⁷/ 6,600

⇒ Speed = 0.00075 x 10⁷

⇒ Speed = 7.5 x 10⁻⁴ x 10⁷

⇒ Speed = 7.5 x 10³ m /sec

Thus, The value of the speed of the satellite in meters per second is,

⇒ Speed = 7.5 x 10³ m /sec

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A random sample of 18 observations taken from a normally distributed population produced the following data:



28. 4 27. 3 25. 5 25. 5 31. 1 23. 0 26. 3 24. 6 28. 4


37. 2 23. 9 28. 7 27. 9 25. 1 27. 2 25. 3 22. 6 22. 7


What is the point estimate of μ?


Make a 99% confidence interval for μ.


What is the margin of error of estimate for μ in part b?

Answers

Point estimate of μ  [tex]26.15[/tex]

99% confidence interval: [tex](24.213, 28.087)[/tex]

Margin of error:[tex]1.437[/tex]

How to estimate μ and create a 99% confidence interval ?

The point estimate of  (population mean) is calculated by finding the sample mean , which is the average of the given sample data. Adding up all the observations and dividing by the sample size (18), we get:

To make a 99% confidence interval for we can use the t-distribution and the sample mean. Since the sample size is 18, we have (18 - 1) = 17 degrees of freedom. Using a t-distribution table or a calculator, we find the critical value for a 99% confidence level and 17 degrees of freedom to be approximately 2.898.

Next, we calculate the standard error (SE) using the sample standard deviation (s) divided by the square root of the sample size .Assuming the population standard deviation is unknown, we estimate it using the sample standard deviation, which is approximately 3.858.

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u = 28.8

The 99% confidence interval for μ is (27.01, 30.59).

How to solve the data

28.4 + 27.3 + 25.5 + 25.5 + 31.1 + 23.0 + 26.3 + 24.6 + 28.4 + 37.2 + 23.9 + 28.7 + 27.9 + 25.1 + 27.2 + 25.3 + 22.6 + 22.7 = 518.3

The sample mean (or the point estimate of μ) is:

518.3 / 18 = 28.8

Calculate each data point's deviation from the mean, square it, and then sum up these values.

(28.4-28.8)² + (27.3-28.8)² + (25.5-28.8)² + (25.5-28.8)² + (31.1-28.8)² + (23.0-28.8)² + (26.3-28.8)² + (24.6-28.8)² + (28.4-28.8)² + (37.2-28.8)² + (23.9-28.8)² + (28.7-28.8)² + (27.9-28.8)² + (25.1-28.8)² + (27.2-28.8)² + (25.3-28.8)² + (22.6-28.8)² + (22.7-28.8)²

= 116.4

Divide by (n - 1), where n is the number of observations. In this case, n = 18, so n - 1 = 17.

So, the variance (s²) is 116.4 / 17 = 6.85 (approximately)

s = √6.85 = 2.62

CI = x ± (t * (s/√n))

CI = 28.8 ± (2.898 * (2.62/√18))

CI = 28.8 ± 1.79

So, the 99% confidence interval for μ is (27.01, 30.59).

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Hello, pleas help me with this geometry question. It’s about the area of sectors. Thanks :) (question in image below).

Answers

Answer:

39.27 square units

Step-by-step explanation:

In circle E with m∠DEF = 70∘ and DE=8, we want to find the area of sector DEF. To do this, we can use the formula for the area of a sector:

A_sector=1/2 r^2⋅

α

where r is the radius of the circle and α is the central angle in radians. In our case, r=8 and α=70 ∘ ⋅ π/180∘ = 7π/18 radians

Now, we can plug these values into the formula:

A_sector = 1/2(8^2) ⋅ 7π/18 = 32 ⋅ 7π/18 ≈ 39.27

So, the area of sector DEF is approximately 39.27 square units, rounded to the nearest hundredth.

The area of sector DEF in circle E is approximately 6.10 square units, rounded to the nearest hundredth.

To find the area of sector DEF in circle E, we need to use the formula for the area of a sector:

Area of sector = (Central angle / 360°) * π * r^2

where "Central angle" is the measure of angle DEF in degrees, "r" is the radius of the circle (DE in this case).

Given that m/DEF = 70° and DE = 8, we can calculate the area of sector DEF as follows:

Area of sector = (70° / 360°) * π * 8^2

Now, perform the calculations step by step:

Area of sector = (70/360) * π * 64

Area of sector = (7/36) * π * 64

Area of sector ≈ 3.14 * (7/36) * 64

Area of sector ≈ 3.14 * 1.9444

Area of sector ≈ 6.10 (rounded to two decimal places)

Therefore, the area of sector DEF in circle E is approximately 6.10 square units, rounded to the nearest hundredth.

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Sam has a box shaped like a rectangular prism. It measures 1/6 inches in height, 1/3 in. Wide and 1/2 in. Long. What is the volume of the box? Leave your answer as an improper fraction

Answers

A rectangular prism is a three-dimensional shape with six faces, all of which are rectangles. The volume of a rectangular prism can be found by multiplying the length, width, and height of the prism.

In this case, Sam's box has a height of 1/6 inches, a width of 1/3 inches, and a length of 1/2 inches. To find the volume, we need to multiply these three dimensions:

(1/6) x (1/3) x (1/2) = 1/36 cubic inches.

Therefore, the volume of Sam's box is 1/36 cubic inches, which is an improper fraction because the numerator is greater than the denominator.

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Points E, F, G and H lie on the circle and EG = EH.
HF and EG intersect at K.
ET is a tangent to the circle at E.
Angle FET = 47° and angle FEG = 25°.
Find the value of x.

Answers

Using the inscribed angle theorem, the value of x in the circle shown is calculated as: m<x = 36°.

How to Apply the Inscribed Angle Theorem?

According to the inscribed angle theorem an inscribed angle has an angle measure that is always half of the measure of the arc it intercepts.

Measure of arc EFG = 2(25 + 47) [inscribed angle theorem]

Measure of arc EFG = 144°

Measure of angle EHG = 1/2(m(EFG)) [inscribed angle theorem]

Substitute:

Measure of angle EHG = 1/2(144) = 72°

m<EHG = m<EGH = 72° [this is because triangle EHG is an isosceles triangle since sides EG = EH].

Therefore, we have:

m<x = 180 - 2(72)

m<x = 36°

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Please help me ill give out brainest
which expression is equivalent to 1/5x(5y+60)
a. 1/5(2xy+3xy+40x)
b. xy+60x
c. y+12x
d. 25xy+300y
e. 13xy
f. x(y+12)

Answers

Answer:

The correct answer is ** x(y+12) or f.

We can simplify the expression 1/5x(5y+60) by multiplying the factors in the parentheses and then dividing by 5. This gives us:

```

1/5x(5y+60) = 1/5 * 5xy + 1/5 * 60x = x(y+12)

```

HELPPPPPPP
I have zero idea of what to do!

Answers

Answer:

72 + 7x + 24 = 180

7x + 96 = 180

7x = 84

x = 12

Dan's small business earned about $85,000 this year. Based on data from similar businesses, Dan expects his annual earnings to increase by 12% each year. Write an exponential equation in the form y=a(b)x that can model Dan's annual earnings, y, in x years. Use whole numbers, decimals, or simplified fractions for the values of a and b. y = _____ To the nearest hundred dollars, how much is Dan's small business predicted to earn in 5 years?

Answers

The equation would be written as: y = $85,000(1 + 0.12/1)^5

Then the predicted earning would be y = $132,559

How to solve for the earning

y=a(b)x

where y = income

a =  $85,000

b = (1 + r = percent increase)

then x = time period = 5 years

When we put in the values we would have y = $85,000(1 + 0.12/1) ^5

The exponential function of the form y = a(b)^x is: y = $85,000(1 + 0.12/1) ^5

When we solve the above, we would have the income = y = $132,559

Therefore the predicted earnings that Dans small business would have in a period of five years is equal to $132,559

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A nearby house requires approximately 52,000 BTUs for heating. If the house is 31 feet long and 25 feet wide, what is the height of the
house? Round your answer to the nearest foot
ft

Answers

The height of the house by the given data is 4000ft.

We are given that;

Number of BTUs for heating= 52000

Now,

The time from minutes to hours by dividing by 60:

t=606.24​ hr

t≈0.104 hr

Then, we can plug in the values into the heat loss formula and solve for A, which is the surface area of the house:

Q=UAΔTt

52,000=0.25A×50×0.104

A=0.25×50×0.10452,000​ ft2

A≈4000 ft2

Therefore, by the algebra the answer will be 4000 ft.

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Answer:3.75 BTUs/ft

height=18 ft

Step-by-step explanation:

(From Unit 7, Lesson 3. )


The Colorado state flag consists of three horizontal stripes of equal height. The


side lengths of the flag are in the ratio 2 : 3. The diameter of the gold-colored disk is


equal to the height of the center stripe. What percentage of the flag is gold?

Answers

The total area of the flag is the sum of the areas of the three stripes and the percentage of the flag that is gold is approximately 0.459%

Let's call this height "h".

We also know that the side lengths of the flag are in the ratio 2:3. This means that if the shortest side is 2x, then the longest side is 3x. Since the three stripes are of equal height, each one must be h/3 in height.

Now we can use this information to find the area of the gold-colored disk and the total area of the flag. The area of a circle is given by the formula A = πr^2, where r is the radius. Since the diameter is equal to the height of the center stripe (which is h/3), the radius of the disk is h/6. So the area of the disk is:

A_disk = π(h/6)^2 = πh^2/36

The total area of the flag is the sum of the areas of the three stripes. Since each stripe is h/3 in height and the shortest side is 2x, the area of each stripe is:

A_stripe = (2x)(h/3) = 2hx/3

So the total area of the flag is:

A_flag = 3(A_stripe) = 6hx

To find the percentage of the flag that is gold, we need to divide the area of the gold-colored disk by the total area of the flag and multiply by 100.

percentage = (A_disk / A_flag) x 100

Substituting our expressions for A_disk and A_flag, we get:

percentage = (πh^2/36) / (6hx) x 100

Simplifying, we can cancel out the factor of h and get:

percentage = (π/216)x100

So the percentage of the flag that is gold is approximately 0.459% (rounded to three decimal places).

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Many artists incorporate geometry shapes into their art. an artist wants to make a sculpture shaped like a cone with a height of 4.2 inches and a radius of 2.5 inches.the artist needs to know the volume of the sculpture to purchase the correct amount of materials

part a. which equation shows the art is used to calculate the volume of a cone with the given measurements

part b. what is the volume,in cubic inches,of the cone? use 3.14 for pie and round your answer to the nearest tenth

Answers

The volume of the cone is approximately 26.1 cubic inches.

What is the equation used to calculate the volume of a cone with a radius of 2.5 inches and a height of 4.2 inches?

The formula used to calculate the volume of a cone is:

V = (1/3) × π ×[tex]r^2[/tex] × h

where V is the volume of the cone, r is the radius of the base of the cone, h is the height of the cone, and π is a mathematical constant that is approximately equal to 3.14.

Part b. Plugging in the given values, we get:

V = (1/3) × 3.14 ×[tex]2.5^2[/tex]× 4.2

V = (1/3) × 3.14 × 6.25 × 4.2

V = 26.125 cubic inches (rounded to the nearest tenth)

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an airplane is 58 m long. a scale model of the plane is 40.6 cm long.
determine the scale factor used to create the model as a decimal rounded
to the nearest thousandth​

Answers

If a scale model of the plane is 40.6 cm long, the scale factor used to create the model is approximately 1:142.857 or 0.007 rounded to the nearest thousandth.

To determine the scale factor used to create the model, we need to divide the length of the actual airplane by the length of the model airplane:

58 m / 40.6 cm

To perform this calculation, we need to convert the units so that they match. We can convert 58 m to cm by multiplying by 100:

58 m = 58 × 100 cm = 5800 cm

Now we can divide:

5800 cm / 40.6 cm = 142.857...

Rounding to the nearest thousandth, we get:

142.857... ≈ 142.857

Therefore, the scale factor used to create the model is approximately 1:142.857 or 0.007 rounded to the nearest thousandth.

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Complete the relative frequency table based on the total number of people surveyed.
Type the correct answer in each box. Round your answers to the nearest hundredth.
Coffee
Tea
Total
Relative Frequency for the Whole Table
Early Bird
Night Owl
0.19
0.44
0.6
Total
0.35
1

Answers

The complete relative frequency table include the following missing values:

Early bird Night Owl Total

Coffee. 0.21 0.44 0.65

Tea. 0.19. 0.16. 0.35

Total. 0.4. 0.6. 1

How to determine and complete the given relative frequency table?

The total of each column is being determined from the grand total which can then be use to fill in the various missing parts of the relative frequency table.

For coffee;

To determine the total = 1-0.35 = 0.65

Coffee early Bird = 0.65-0.44 =0.21

For tea ;

Tea night owl = 0.35-0.19 = 0.16

For grand total = 1-0.6 = 0.4

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A population of insects increases at a rate of 280 +64 +0.9t^2 insects per day Find the Insect population after 5 days, assuming that there are consects att Round your arwer to the ne

Answers

Since we need to round our answer to the nearest whole number, the insect population after 5 days will be approximately 367 insects.

Given the rate at which the insect population increases, we can determine the population after 5 days using the given formula: 280 + 64 + 0.9t^2 insects per day.
First, we need to substitute t with the number of days, which is 5:

280 + 64 + 0.9(5)^2

Now, calculate the value of the equation:

280 + 64 + 0.9(25) = 280 + 64 + 22.5 = 366.5

OR,

The population of insects after 5 days can be found by plugging in t = 5 into the given equation:

Population = 280 + 64 + 0.9(5)^2
Population = 280 + 64 + 22.5
Population = 366.5

Rounding to the nearest insect, the population after 5 days is 367 insects.

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Can someone how to use a TI-84 Plus to do the following:

Normal Distribution: Finding Values

Normal Distribution: Finding Probibilities

Sampling Distributions and the Central Limit Theorem

!!!!I have a test on this tmr please help!!!!

Answers

Normal Distribution: Finding Values

Press the "2nd" key, then press the "vars" key to access the DISTR menu.

Scroll down to "Normalcdf" and press enter.

Enter the lower bound, upper bound, mean, and standard deviation. For example, if you want to find the probability that X is between 60 and 70, given that the mean is 65 and the standard deviation is 5, you would enter "60, 70, 65, 5".

Press enter to get the result. The calculator will give you the probability that X falls between the two values you entered.

Normal Distribution: Finding Probabilities

Press the "2nd" key, then press the "vars" key to access the DISTR menu.

Scroll down to "InvNorm" and press enter.

Enter the probability you want to find. For example, if you want to find the z-score that corresponds to the 90th percentile, you would enter "0.9".

Enter the mean and standard deviation. For example, if the mean is 65 and the standard deviation is 5, you would enter "65, 5".

Press enter to get the result. The calculator will give you the z-score that corresponds to the probability you entered.

Sampling Distributions and the Central Limit Theorem: Press the "2nd" key, then press the "vars" key to access the DISTR menu.

Scroll down to "1-PropZTest" or "2-PropZTest" and press enter, depending on the type of test you want to perform.

Enter the sample statistics and the population parameters, if known. The calculator will use these values to calculate the test statistic and p-value.

Press enter to get the result. The calculator will give you the test statistic and the p-value, which you can use to make inferences about the population.

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PLease help 1 and 2 Pythagorean Theorem and if you can explain please

Answers

Answer:

Step-by-step explanation:

The Pythagorean theorem has the formula a squared(leg) + b squared(leg) = c squared(longest leg). This means [tex]12^{2} +16^{2} =20^{2} -- > 144+256=400[/tex] which is true meaning number 1 is a right triangle. [tex]10^{2} +49.5^{2} = 50.5^{2} -- > 100+2450.25=2550.25[/tex] is true meaning number 2 is also a right triangle because the sum of the shortest legs squared are equal to the longest leg (hypotenuse) squared.

You invest $2500 in an account to save for college. account 1 pays 6%annual interest compounded quarterly. account 2 pays 4% annual interest compounded continuously. which account should you choose to obtain the greater amount in 10 years?



account 1


or


account 2

Answers

You should choose Account 1 to obtain the greater amount in 10 years. Account 1 will have a higher balance after 10 years.

Account 1 pays 6% annual interest compounded quarterly, which means the interest is calculated and added to the principal four times a year. You can use the formula A = P(1 + r/n)^(nt) to calculate the future value, where A is the final amount, P is the principal ($2500), r is the annual interest rate (0.06), n is the number of times compounded per year (4), and t is the number of years (10).

Account 2 pays 4% annual interest compounded continuously. You can use the formula A = Pe^(rt) to calculate the future value, where A is the final amount, P is the principal ($2500), e is the base of the natural logarithm (approximately 2.71828), r is the annual interest rate (0.04), and t is the number of years (10).

When you compare the final amounts for both accounts, Account 1 will have a higher balance after 10 years.

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Christy went jogging on saturday. the table shows how far she had jogged after various times.


distance (miles) 10


15


20


time (hours)


2


3


4.


christy subtracted to find her jogging rate for each time period and said that her rate


increased each hour, from 8 to 12 to 16 miles per hour. is christy correct? explain why or


why not.

Answers

She is incorrect when she said that her rate increased each hour from 8 to 12 to 16 miles per hour. Her jogging rate was actually a steady 5 miles per hour.

You asked if Christy is correct when she said that her rate increased each hour, from 8 to 12 to 16 miles per hour. Let's analyze the data given in the table and see if she's right.

The table shows the distance Christy jogged and the corresponding time:
- 10 miles in 2 hours
- 15 miles in 3 hours
- 20 miles in 4 hours

To find her jogging rate for each time period, we need to divide the distance by the time.

1. For the first 2 hours:
Jogging rate = distance / time = 10 miles / 2 hours = 5 miles per hour

2. For the first 3 hours:
Jogging rate = distance / time = 15 miles / 3 hours = 5 miles per hour

3. For the first 4 hours:
Jogging rate = distance / time = 20 miles / 4 hours = 5 miles per hour

Christy's jogging rate remained constant at 5 miles per hour throughout her run. Therefore, she is incorrect when she said that her rate increased each hour from 8 to 12 to 16 miles per hour. Her jogging rate was actually a steady 5 miles per hour.

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The ceiling of Stacy's living room is a square that is 25 ft long on each side. Stacy knows the diagonal of the ceiling from corner to corner must be longer than 25 ft, but she doesn't know how long it is.



Solve for the length of the diagonal of Stacy's ceiling in two ways:



(a) Using the Pythagorean Theorem.



(b) Using trigonometry

Answers

The length of the diagonal of Stacy's ceiling using the Pythagorean Theorem and trigonometry is 35.36 ft.

(a) Using the Pythagorean Theorem:

Since the ceiling is a square, we can treat it as two right triangles. Let's call the length of the diagonal 'd'. Now, we can apply the Pythagorean Theorem (a² + b² = c²) to one of the right triangles:

a² + b² = d²
25² + 25² = d²
625 + 625 = d²
1250 = d²

Now, take the square root of both sides:

√1250 = d
d ≈ 35.36 ft

(b) Using trigonometry:

In one of the right triangles, the angle between the two sides of the square (25 ft each) is 45 degrees. We can use the tangent function (tan) to relate the angle to the side lengths:

tan(45) = opposite side / adjacent side
tan(45) = 25 / 25

Since tan(45) = 1, we have 1 = 1, which confirms the angle is 45 degrees. Now, we can use the sine or cosine function to find the diagonal:

sin(45) = opposite side / hypotenuse
sin(45) = 25 / d

OR

cos(45) = adjacent side / hypotenuse
cos(45) = 25 / d

Both functions give us the same result since the angles are 45 degrees. Solving for 'd':

d = 25 / sin(45)
d ≈ 35.36 ft

So, the length of the diagonal of Stacy's ceiling is approximately 35.36 ft using both methods.

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During the period 2000-2016, the average costs B (in dollars) for a new boat and the average costs H (in dollars) for a hovercraft can be modeled


by the following functions:


B = 30 +140 and H=-1012 +350 + 400


where t is the number of years since 2000


(a) How can the difference of the costs of a hovercraft and the costs of a boat be expressed? (4 points)


(b) About how much was the difference in the year 2010? (2 points)

Answers

The difference between the costs of a hovercraft and a boat in the year 2010 was approximately $1,558.

(a) The difference in costs between a hovercraft and a boat can be expressed as follows:

Cost difference = Hovercraft cost - Boat cost

Cost difference = (-1012 + 350t + 400) - (30 + 140t)

Cost difference = -1012 + 350t + 400 - 30 - 140t

Cost difference = 220t - 642

Therefore, the difference in costs between a hovercraft and a boat can be expressed as 220t - 642.

(b) To find the difference in the year 2010, we need to substitute t = 10 in the expression we derived in part (a):

Cost difference = 220t - 642

Cost difference = 220(10) - 642

Cost difference = 2200 - 642

Cost difference = 1558

Therefore, the difference between the costs of a hovercraft and a boat in the year 2010 was approximately $1,558.

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this 3 questions please????????
Consider the following function
f(x) = x^2/x^2 -9
Find the criticat number of renter your antwers as a comma-separated list) Find the open intervals on which the function is increasing or decreasing. (Enter your answers using interval notation. If an answer does not exist, enter DNE.)

Answers

Critical numbers: 0, -3, 3
Increasing intervals: (-∞, -3), (3, ∞)
Decreasing intervals: (-3, 0), (0, 3)

Let's analyze the given function and find the critical numbers, as well as the intervals where it is increasing or decreasing.

Function: f(x) = x^2 / (x^2 - 9)

1. Find the critical numbers:
To find the critical numbers, we need to compute the first derivative of the function and set it equal to zero or identify where it's undefined.

f'(x) = (2x(x^2 - 9) - x^2(2x)) / (x^2 - 9)^2 = (2x^3 - 18x - 2x^3) / (x^2 - 9)^2 = -18x / (x^2 - 9)^2

Setting f'(x) equal to zero:
-18x = 0
x = 0

Now, let's check where f'(x) is undefined:
x^2 - 9 = 0
x = ±3

Thus, the critical numbers are 0, -3, and 3.

2. Find the open intervals where the function is increasing or decreasing:
To determine the intervals, we will examine the sign of f'(x) in the intervals determined by the critical numbers: (-∞, -3), (-3, 0), (0, 3), (3, ∞).

Interval (-∞, -3): Choose x = -4, then f'(-4) > 0. So, f(x) is increasing on this interval.

Interval (-3, 0): Choose x = -1, then f'(-1) < 0. So, f(x) is decreasing on this interval.

Interval (0, 3): Choose x = 1, then f'(1) < 0. So, f(x) is decreasing on this interval.

Interval (3, ∞): Choose x = 4, then f'(4) > 0. So, f(x) is increasing on this interval.

Your answer:
Critical numbers: 0, -3, 3
Increasing intervals: (-∞, -3), (3, ∞)
Decreasing intervals: (-3, 0), (0, 3)

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Zahra and some friends are going to the movies. At the theater, they sell a bag of popcorn for $3.50 and a drink for $5. How much would it cost if they bought 8 bags of popcorn and 5 drinks? How much would it cost if they bought
p bags of popcorn and d drinkss

Answers

Using basic mathematical procedures, we can determine that the total cost of the 8 bags of popcorn and 5 drinks is $53.

What do math operations entail?

An operation, in mathematics, is a mathematical function that transforms zero or more input values into a precisely defined output value.

The quantity of operands affects the operation's arity.

The rules that specify the order in which we should carry out the operations required to solve an equation are referred to as the order of operations.

PEMDAS stands for Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. (from left to right).

The whole price is thus:

Popcorn costs $3.50 for one bag.

One beverage costs $5.

Total cost for 5 beverages and 8 bags of popcorn:

(8 × 3.50) + (5 × 5) 28 + 25 $53

Therefore ,Using basic mathematical procedures, we can determine that the total cost of the 8 bags of popcorn and 5 drinks is $53.

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The appropriate response is provided below:

Zahra is going to the cinema with a few of her friends. A bag of popcorn costs $3.50 and a drink costs $5 at the theatre. How much would it cost if they purchased 5 beverages and 8 bags of popcorn?

a) Factorise x²-2x-3

Answers

Answer:

Solution: (x-3)(x+1)

Step-by-step explanation:

1) Using Mid term break:

x²-2x-3

x²+x-3x-3

2) Take Common Factors from the two pairs

(x²+x) + (-3x-3)

x(x+1) -3(x+1)

3) Rewrite in Factored Form:

(x-3)(x+1)

For a random sample of 75 kindergartners, mothers' incomes are plotted on the x-axis and fathers' incomes are plotted on the y-axis. The resulting scatter plot produces a linear association described by the equation y=1. 23x+5. 3. Which conclusion can be made about this sample?

Answers

The intercept of 5.3 suggests that even if a mother had no income, the expected minimum fathers' income would be $5.30.

In mathematical terms, the equation y=1.23x+5.3 is in slope-intercept form, where y represents the fathers' incomes and x represents the mothers' incomes. The slope of the line, 1.23, represents the change in fathers' incomes for every one unit increase in mothers' incomes. The y-intercept of the line, 5.3, represents the minimum fathers' income when the mothers' income is zero.

With this equation, we can make several conclusions about this sample. Firstly, the positive slope suggests a positive correlation between the incomes of mothers and fathers. As the mothers' incomes increase, the fathers' incomes also tend to increase.

Secondly, the slope value of 1.23 suggests that fathers' incomes increase by $1.23 for every $1 increase in mothers' incomes.

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A cereal company packages their granola in cylindrical containers that have a diameter of 20 cm and a height of 17. 4 cm. Approximately how much granola will a container hold?

Answers

The volume of granola a cylindrical container can hold 5451.6 cubic centimeters if containers have a diameter of 20 cm and a height of 17. 4 cm.

The number of unit cubes (cubes of unit length) that can fit inside a cylinder determines its volume.


Identifying the radius (r) and height (h)
r = 10 cm
h = 17.4 cm

Calculating the volume (V) using the formula V = πr²h
V = π × (10 cm)² × 17.4 cm
V ≈ 3.14 × 100 cm² × 17.4 cm
V ≈ 5451.6 cm³

Approximately, a container will hold 5451.6 cubic centimeters of granola.

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Help Please
Show your work so I can understand to get brainly

Answers

The maximum value represents (b) the point where most profits are made

What the maximum value represents

Given that the graph is the graph of a company's profit

The maximum value represents (b) the point where most profits are made

What the x-intercept represents

Given that the graph is the graph of a company's profit

The x-intercept is when the profit = 0

So

The x-intercept represents (b) the price per pen where no profit is made

The approximate average rate

This is calculated as

Rate = [f(6) - f(3)]/[6 - 3]

So, we have

Rate = [0 - 120]/[6 - 3]

Rate = -40

The domain in this context

The domain of this graph given the situation is (0, 6] because the values do not makes sense beyond those points

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