Find the total surface area of the following


cone. Leave your answer in terms of a.


4 cm


3 cm


SA = [ ? ]7 cm


Hint: Surface Area of a Cone = tre + B


Where e = slant height, and B = area of the base

The p-value of 0.416 indicates that there is no significant difference in the proportion of Republicans between the two areas of town. Therefore, we fail to reject the null hypothesis and conclude that there is no evidence of a significant difference in the proportion of Republicans between the two areas of town.

Based on the given information, the p-value is 0.416, which is larger than the conventional level of significance (e.g., 0.05 or 0.01). Therefore, we fail to reject the null hypothesis that there is no significant difference in the proportion of republicans between the two areas of town.

In other words, we cannot conclude that there is a significant difference between the two areas. It is possible that any observed difference could be due to chance.

However, it is important to note that statistical significance does not necessarily mean practical significance, and further investigation may be needed to determine if there are any meaningful differences between the two areas in terms of the proportion of republicans.

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Answer:

--------------------------

Since CD is diameter, therefore the angle CAD opposite to it is a right angle.

We are given the lengths of two legs, AD = 16 and AC = 30.

Use Pythagorean theorem to find the length of the hypotenuse CD:

Answer:

Step-by-step explanation:

Unfortunately, I cannot answer this question without additional information about the distances traveled and the time taken by Reiko to travel from point A to point B and back to point A.

The speed at which Reiko traveled is calculated as distance divided by time. Therefore, we need to know both the distance and time for each leg of the journey to determine the speed.

Without this information, it is not possible to determine whether Reiko traveled from A to B at a speed greater than 40 miles per hour.

The formula for d is d = (t * 21/4b² + 3b)/5

To make d the subject of the formula t=4b²/21(d-3b/5), we need to isolate d on one side of the equation and simplify.

First, let's simplify the right side of the equation by multiplying the fraction by the LCD of 5:

t = 4b²/21(d-3b/5)

t = (4b²/21d) * 5d - 3b

Now, we can isolate d by dividing both sides of the equation by the coefficient of d on the right side:

t/(4b²/21) = 5d - 3b

Simplifying the left side, we get:

t * 21/4b² = 5d - 3b

Adding 3b to both sides of the equation, we get:

t * 21/4b² + 3b = 5d

Finally, we can divide both sides by 5 to isolate d:

d = (t * 21/4b² + 3b)/5

Therefore, the formula for d is:

d = (t * 21/4b² + 3b)/5

In words, to find the value of d, we need to multiply the value of t by 21/4b², add 3b to the result, and divide the sum by 5.

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The cardboard box with the largest volume can hold the greatest number of 1 in x 2 in x 4 in sponges.

To find the box with the largest volume, first determine the volume of each sponge: V_sponge = 1 in x 2 in x 4 in = 8 cubic inches. Next, find the volume of each box by multiplying its length, width, and height (V_box = L x W x H).

To determine how many sponges each box can hold, divide the volume of the box by the volume of the sponge (V_box / V_sponge). The box with the highest resulting quotient can hold the most 1 in x 2 in x 4 in sponges.

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Kadeesha would have approximately $1187.80 in the account 11 years after her initial investment.

We can use the formula for compound interest to solve this problem. The formula is given by:

A = P(1 + r/n)^(nt)

where A is the amount after t years, P is the principal amount, r is the annual interest rate (as a decimal), n is the number of times the interest is compounded per year, and t is the number of years.

In this case, P = $900, r = 0.015, n = 1 (since interest is compounded annually), and t = 11. Plugging these values into the formula, we get:

A = $900(1 + 0.015/1)^(1*11) = $1187.7989

Rounding this to the nearest tenth, we get $1187.80. Therefore, Kadeesha would have approximately $1187.80 in the account 11 years after her initial investment.

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If Kai spent 55$ all together then each pack of gum cost $4.

To solve this question follow the steps given below:

Calculate the total cost of Gatorade.
Since there are 5 bags and each bag has a bottle of Gatorade that costs $3, the total cost for Gatorade is 5 * $3 = $15.

Calculate the total cost of gum.
Since Kai spent $55 in total, we need to subtract the cost of Gatorade to find the total cost of gum. $55 - $15 = $40.

Calculate the total number of gum packs.
Each bag contains 2 packs of gum, and there are 5 bags. So, there are    2 * 5 = 10 packs of gum.

Calculate the cost of each pack of gum.
To find the cost of each pack of gum, divide the total cost of gum by the number of gum packs. $40 / 10 = $4.

So, each pack of gum cost $4.

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To determine the cost of buying different numbers of songs for his mp3 player, Raymond needs to know the cost of a single song and the total number of songs he wants to buy, as well as consider bulk purchasing options like buying an album.

Assuming the cost of a single song is $1, if Raymond wants to buy 10 songs, the cost would be 10 x $1 = $10. Similarly, if Raymond wants to buy 20 songs, the cost would be 20 x $1 = $20. In general, the cost of buying n songs would be n x $1.

If the cost of a single song is not $1, then Raymond would need to adjust his calculations accordingly. For example, if the cost of a single song is $0.99, then the cost of buying 10 songs would be 10 x $0.99 = $9.90, and the cost of buying 20 songs would be 20 x $0.99 = $19.80.

Raymond could also consider purchasing songs in bulk, such as by buying an album, which typically offers a discounted price compared to purchasing individual songs. In this case, the cost of buying different numbers of songs would depend on the number of songs in the album and the cost of the album.

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Complete Question:

Raymond wants to know the costs of buying different numbers of songs for his MP3 player. The cost of each song is the same.

• Let s represent the possible number of songs Raymond could buy.

• Let d represent the amount of money, in dollars, Raymond would need to buy the songs.

Fill in the table for all missing values of s and d.

Number of songs, s

Amount of money ($), d

2

2.58

5.16

7

11

21.93

The man needs to pay a total tax of Rs 69780 (3000 for social security and 66780 for yearly tax).

To find the tax, let's find the man's yearly income:

Yearly income = Monthly income x 12

Yearly income = 53000 x 12 = 636000

Next, let's find how much he deposits in civil investment fund and charity:

Amount deposited in civil investment fund = Yearly income x 20%

Amount deposited in civil investment fund = 636000 x 0.2 = 127200

Amount deposited in charity = Yearly income x 10%

Amount deposited in charity = 636000 x 0.1 = 63600

Now, let's calculate the total taxable income:

Total taxable income = Yearly income - Amount deposited in civil investment fund - Amount deposited in charity

Total taxable income = 636000 - 127200 - 63600 = 445200

Since the man's taxable income is above Rs 300000, he needs to pay 1% social security tax on Rs 300000:

Social security tax = 1% of 300000 = 3000

Now, let's calculate the yearly tax imposed at a rate of 15%:

Yearly tax = Total taxable income x 15%

Yearly tax = 445200 x 0.15 = 66780

Therefore, the man needs to pay a total tax of Rs 69780 (3000 for social security and 66780 for yearly tax).

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Answer:

i think the answer is 20.25

Step-by-step explanation:

5764801/256, is equivalent expression of [tex](7/2)^8[/tex] which is an exact value and cannot be simplified any further.

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable. You can write equivalent expressions by combining like terms. Like terms are terms that have the same variables raised to the same powers.

We can simplify the expression[tex](7/2)^8[/tex]by raising both the numerator and denominator to the 8th power:

We get,

[tex](7/2)^8 = 7^8 / 2^8[/tex]

To solve this value,  simplify the numerator and denominator separately:

So we get,

[tex]7^8[/tex]= 5764801

[tex]2^8[/tex]= 256

Therefore, [tex](7/2)^8[/tex] = 5764801/256, which is an exact value and cannot be simplified any further.

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Answer:

The graph on the top right

Step-by-step explanation:

The slope-intercept form is y = mx + b

m = the slope

b = y-intercept

The equation is y = 1/2x + 2

The y-intercept in this equation is 2, meaning the graph has a point (0,2) on it.  Looking at the options, the only graph that has a point (0,2) is the map on the top right, and that is the answer.

The equation is (x^2 + y^2 - 38x + 6y = -369).

The center of the lake is 19 miles east and 3 miles south of the town hall, which means the coordinates of the center are (19,-3). The radius of the lake is 0.5 miles.

Using the standard equation of a circle, we have:

(x - h)^2 + (y - k)^2 = r^2

where (h,k) is the center of the circle and r is the radius.

Substituting the given values, we get: (x - 19)^2 + (y + 3)^2 = 0.5^2

Expanding the left side, we get: x^2 - 38x + 361 + y^2 + 6y + 9 = 0.25

Simplifying and rearranging terms, we get:

x^2 + y^2 - 38x + 6y + 369.25 = 0.25

Subtracting 369 from both sides, we get:

x^2 + y^2 - 38x + 6y = -369

Therefore, the equation that represents the lake on the map is:

(x - 19)^2 + (y + 3)^2 = 0.5^2, which can be simplified to (x^2 + y^2 - 38x + 6y = -369).

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Using  trignometric functions the shorter side AD has length a ≈ 25.75 cm and the longer side AB has length b ≈ 34.25 cm.

In the given scenario, we have a rectangle with sides AD and AB. The length of AD is represented as 'a' and is approximately 25.75 cm, while the length of AB is denoted as 'b' and is approximately 34.25 cm. The diagonal AC of the rectangle has a length of 42.3 cm and forms an angle of 53° with AD.

To find the lengths of sides a and b, we can utilize trigonometric functions, specifically cosine and sine. Since we have the length of the diagonal AC and the angle it forms with AD, we can set up the following equations:

cos(53°) = a/42.3

sin(53°) = b/42.3

By rearranging the equations, we can solve for a and b:

a = 42.3 * cos(53°) ≈ 25.75 cm

b = 42.3 * sin(53°) ≈ 34.25 cm

By substituting the given values into the equations, we can determine that the length of AD (a) is approximately 25.75 cm, and the length of AB (b) is approximately 34.25 cm.

These calculations allow us to find the side lengths of the rectangle based on the given information about the diagonal length and angle. Understanding trigonometric relationships enables us to solve geometric problems involving angles, sides, and diagonals in various shapes and configurations.

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The length of the towel bar is 13.5 inches.

Let's use the given information to write and solve an equation for the length of the towel bar.

We know that the door is 29 inches wide and that there is a 7.75-inch distance from each end of the towel bar to the respective end of the door. Let's denote the length of the towel bar as x.

So, the total width of the door can be expressed as the sum of the two distances and the length of the towel bar:
29 = 7.75 + x + 7.75

Now, let's solve for x:
29 = 15.5 + x
x = 29 - 15.5
x = 13.5 inches

Therefore, the length of the towel bar is 13.5 inches.

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The statement that is best supported by the data is this: C. The range of data in Mr. Joe’s class is less than the range of data in Ms. Gambino’s class.

The true statement about the data is that the range of data in Mr. Joe's class is less than the range of data in Ms. Gambino's class.

The range of data in Mr. Joe's class spans from 4 to 10 hours while the range of data in Ms. Gambino's class spans from 4 to 12 hours. So, the data range for the latter class is higher than the former.

Complete Question:

The average number of hours of sleep of Ms. Gambino’s and Mr. Joe’s classes is shown below. Which of the following statements is best supported by the data?

The image shows a line graph:

Mr. Gambino's Class: Range 4 - 12

Hours: 4 = 0

5 = 1

6 = 1

7 = 3

8 = 5

9 = 3

10 = 2

11 = 1

12 = 1

Mr. Joe's class: Range 4 -12

4 = 0

5 = 1

6 = 5

7 = 3

8 = 1

9 = 2

10 = 5

11 = 0

12 = 0

The median number of hours slept in Ms. Gambino’s class is less than the median number of hours in Mr. Joe’s class.

The data for Ms. Gambino’s class is symmetrical, while the data for Mr. Joe’s class is skewed right.

The range of data in Mr. Joe’s class is less than the range of data is Ms. Gambino’s class.

The mode of the data in Ms. Gambino’s class was equal to the mode of the data in Mr. Joe’s class.

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The mass of the wire is 500.

To find the mass of the wire, we need to integrate the density function over the surface area of the wire.

First, we need to parameterize the curve. The equation of the circle with center at the origin and radius 5 is:

x^2 + y^2 = 25

We can parameterize this curve by letting:

x = 5cos(t)
y = 5sin(t)

where t varies from 0 to pi/2 (the first quadrant).

Next, we need to find the surface area element. We can do this using the formula:

dS = sqrt(1 + (dz/dx)^2 + (dz/dy)^2) dA

where dz/dx and dz/dy are the partial derivatives of the height function z = f(x,y) (in this case, z = 0 since the wire is a curve in the xy-plane).

Since dz/dx = dz/dy = 0, we have:

dS = dA

where dA is the area element in the xy-plane, which is given by:

dA = |(dx/dt)(dy/ds) - (dx/ds)(dy/dt)| dt ds

Plugging in our parameterization, we have:

dA = 5 dt ds

Now we can integrate the density function over the surface area of the wire:

m = ∫∫ 8(x,y) dS

= ∫∫ 2xy dA

= ∫[0,pi/2] ∫[0,5] 2(5cos(t))(5sin(t)) (5 dt ds)

= 500

Therefore, the mass of the wire is 500.

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Hunter made a mistake in calculating the volume of the rectangular prism, hence he may have chosen the wrong formula.

The volume of a rectangular prism, with dimensions length, width and height, is given by the multiplication of these dimensions, according to the equation presented as follows:

Volume = length x width x height.

The dimensions for this problem are given as follows:

2m, 3m and 5m.

Hence the volume of the prism is given as follows:

V = 2 x 3 x 5

V = 30 m³.

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She will need 4 quarts of water.

Given Hannah decided to make finger gelatin for a huge children’s party. She had to make 8 packs of gelatin. Each pack needed 2 cups of water.

Since each pack of gelatin requires 2 cups of water, Hannah will need a total of:

8 packs x 2 cups/pack = 16 cups of water

To convert cups to quarts, we need to divide the number of cups by 4 (since there are 4 cups in a quart):

16 cups ÷ 4 cups/quart = 4 quarts

Therefore, Hannah will need 4 quarts of water to make 8 packs of finger gelatin for the children’s party.

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The 95% confidence interval for the population mean difference in IQ test scores between Monday and Friday is (-6.174, -3.826) points. This indicates that we are 95% confident that the true mean difference falls within this range.

We can use the formula for the confidence interval of the mean difference in a repeated-measures study:

CI = MD ± t* SE

where MD is the sample mean difference, SE is the standard error for the mean difference, and t is the critical value from the t-distribution with n-1 degrees of freedom and a confidence level of 95%.

Substituting the given values, we get:

CI = -5 ± t(0.51)

We need to find the value of t. Since n = 9, we have 8 degrees of freedom. Using a t-table or calculator with a degrees of freedom of 8 and a confidence level of 95%, we find that t = 2.306.

Substituting t = 2.306, we get:

CI = -5 ± 2.306(0.51)

CI = -5 ± 1.174

Therefore, the 95% confidence interval for the population mean difference is (-6.174, -3.826). We can interpret this interval as follows: we are 95% confident that the true mean difference in IQ test scores taken on a Monday versus those taken on a Friday lies between -6.174 and -3.826 points.

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The answer to whether it is this a fair game is: No, the game is not fair because Noah does not have equal probabilities of winning or losing. Therefore, the correct option is 1.

The reason why it is not a fair game is as follows.

Since the probabilities of winning and losing are not equal (1/81 vs 64/81), the game is not fair. Therefore, the correct answer is option 1.

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Answer:

1/169

Step-by-step explanation:

Answer: -40

Step-by-step explanation:

Rate of change is calculated as the slope. The formula for Slope is:

S = [tex]\frac{x_{1}-x_{2} }{ y_{1}-y_{2}}[/tex]

The two points we have are when x = 3 and 6.

the points are (3, 120) and (6, 0), as we can see.

plugging into the slope formula:

S = [tex]\frac{120-0 }{ 3-6}[/tex]

S = 120/-3

S = -40

Which hopefully makes sense, because the slope is negative, (the graph is falling).

a) When the radius is 4 cm, it is changing at a rate of 1/(4π) cm/s.

b) When the circumference is 3 cm, the radius is changing at a rate of 2/3 cm/s.

a. Given that the area of a circle increases at a rate of 2 cm²/s, let's denote this rate as dA/dt.

The formula for the area of a circle is A = πr²,

where A is the area and r is the radius.

We want to find the rate at which the radius is changing, or dr/dt, when the radius is 4 cm.

Using implicit differentiation with respect to time t, we get:

dA/dt = d(πr²)/dt 2 = 2πr(dr/dt)

Now, we'll plug in the radius value of 4 cm:

2 = 2π(4)(dr/dt)

Solving for dr/dt, we get:

dr/dt = 1/(4π) cm/s

b. We are given the circumference, which is 3 cm.

The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius.

First, we need to find the radius when the circumference is 3 cm: 3 = 2πr r = 3/(2π)

Now, we'll plug this value for the radius back into the formula from part a:

2 = 2π(3/(2π))(dr/dt)

Solving for dr/dt, we get:

dr/dt = 2/3 cm/s

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Step-by-step explanation:

8p= 56

p= 7

therefore, the neighbours bought 7 packets of hotdogs.

To find the height of the coffee cup, we can use the formula for the volume of a cylinder:

V = πr^2h

where V is the volume, r is the radius, and h is the height.

We are given that the circumference of the coffee cup is 15.1 cm. The formula for the circumference of a cylinder is:

C = 2πr

where C is the circumference and r is the radius.

We can use this formula to find the radius of the coffee cup:

15.1 cm = 2πr

r = 15.1 cm / (2π)

r ≈ 2.4 cm

Now we can use the given volume and radius to find the height of the coffee cup:

161 cm^3 = π(2.4 cm)^2h

h = 161 cm^3 / (π(2.4 cm)^2)

h ≈ 4.0 cm

Therefore, the height of the coffee cup is approximately 4.0 cm.

Answer:

5x^3-25x^2+6x-30

Step-by-step explanation:

Answer:

Step-by-step explanation:

5x2(x − 5) + 6(x − 5)

Using the Distributive Law:

= 5x^3 - 25x^2 + 6x - 30

In factored form it is

(x - 5)(5x^2 + 6)

The residual plot can provide valuable insights into the adequacy of the regression model, and whether any modifications or alternative models may be needed to better explain the data.

A residual plot is a visual tool for evaluating a regression model's goodness-of-fit. The residuals—that is, the discrepancies between the observed and expected values—are plotted against the predicted values.

The residuals should be randomly dispersed around zero and the plot should show no clear patterns or trends if the regression equation accurately models the data.

The residuals may show patterns or trends in the plot if the regression equation is a poor model of the data, which would indicate that the model is failing to account for some crucial characteristics of the data.

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The value of the calculated percent markup of the shirt is 11.1%

From the question, we have the following parameters that can be used in our computation:

A department store buys 200 shirts at a cost of ​$ 3600 and sells them at a selling price of ​$ 20 each.

This means that

Cost price = 3600/200

Evaluate

Cost price = 18

The percent markup of the shirt is then calculated as

Percentage = (20 - 18)/18

Evaluate

Percentage = 11.1%

Hence, the percent markup of the shirt is11.1%

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