What is the actual perimeter of the living room?

The perimeter of the triangle formed by joining the midpoints of the sides of the original triangle is 3.

To find the perimeter of the triangle formed by joining the midpoints of the sides of the original triangle, we first need to find the midpoints. The midpoint of a side of a triangle is the point that is exactly halfway between the endpoints of that side.

Using the formula for the midpoint of a line segment ((x1+x2)/2, (y1+y2)/2), we can find the midpoints of the sides with lengths 9, 12, and 15:

Midpoint of the side with length 9: ((9+12)/2, (0+0)/2) = (10.5, 0)

Midpoint of the side with length 12: ((9+15)/2, (0+0)/2) = (12, 0)

Midpoint of the side with length 15: ((12+9)/2, (0+0)/2) = (10.5, 0)

Note that all three midpoints lie on the x-axis.

Now we can find the lengths of the sides of the triangle formed by joining the midpoints. These sides are the line segments connecting the midpoints, and their lengths are equal to the distances between the midpoints:

Length of the side connecting (10.5, 0) and (12, 0):

d = sqrt((12-10.5)^2 + (0-0)^2) = 1.5

Length of the side connecting (10.5, 0) and (10.5, 0):

d = sqrt((10.5-10.5)^2 + (0-0)^2) = 0

Length of the side connecting (12, 0) and (10.5, 0):

d = sqrt((10.5-12)^2 + (0-0)^2) = 1.5

So the triangle formed by joining the midpoints of the sides of the original triangle is an isosceles triangle with two sides of length 1.5 and one side of length 0. The perimeter of this triangle is:

Perimeter = 1.5 + 1.5 + 0 = 3

Therefore, the perimeter of the triangle formed by joining the midpoints of the sides of the original triangle is 3.

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101 is not in the sequence of 3n-2 because it cannot be obtained by multiplying a positive integer n by 3 and subtracting 2 from the product.

The sequence 3n-2 is a set of numbers obtained by taking a positive integer n, multiplying it by 3 and then subtracting 2 from the product. For example, if n = 1, then 3n-2 = 1. If n = 2, then 3n-2 = 4. If n = 3, then 3n-2 = 7, and so on.

Now, you may wonder why the number 101 is not in the sequence of 3n-2. To understand this, we need to determine whether there exists a positive integer n such that 3n-2 is equal to 101.

Let's start by assuming that such an n exists. Then we can write:

3n-2 = 101

Adding 2 to both sides, we get:

3n = 103

Dividing both sides by 3, we get:

n = 103/3

This means that n is not a whole number, which contradicts our assumption that n is a positive integer. Therefore, there cannot exist any positive integer n such that 3n-2 equals 101.

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To find the center of a circle when the circumference is not given, you still find it.

1. Determine the coordinates of at least three non-collinear points on the circle. Non-collinear points are points that do not lie on a straight line.
2. Using these points, create two line segments that are chords of the circle. A chord is a line segment connecting two points on the circle.
3. Find the midpoints of each chord. The midpoint formula is given as: Midpoint (M) = ((x1 + x2) / 2, (y1 + y2) / 2).
4. Calculate the slope of each chord using the slope formula: Slope (m) = (y2 - y1) / (x2 - x1).
5. Calculate the slope of the perpendicular bisectors of each chord. Since these lines are perpendicular to the chords, their slopes are the negative reciprocal of the chord slopes: m_perpendicular = -1 / m_chord.
6. Write the equation of each perpendicular bisector using the point-slope formula: y - y_midpoint = m_perpendicular * (x - x_midpoint).
7. Solve the system of equations formed by the two perpendicular bisectors. The solution is the coordinates of the center of the circle.

By following these steps, you can find the center of the circle even when the circumference is not given.

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The two possible values for angle H in triangle GHI are approximately 93.1 degrees and 273.1 degrees, rounded to the nearest tenth of a degree

To find the possible values of angle H in triangle GHI, we can use the law of cosines.

Let's label angle H as x. Then, we can use the law of cosines to solve for x:

               cos(x) = (9.3² + 9.6² - 2(9.3)(9.6)cos(109))/ (2 * 9.3 * 9.6)

Simplifying this equation, we get:

                cos(x) = -0.0588

To solve for x, we can take the inverse cosine of both sides:

                       x = cos⁻ ¹ (-0.0588)

Using a calculator, we can find that x is approximately 93.1 degrees.

However, there is another possible value for angle H. Since cosine is negative in the second and third quadrants,

We can add 180 degrees to our previous result to find the second possible value for angle H:

                     x = 93.1 + 180 = 273.1 degrees

So the two possible values for angle H are approximately 93.1 degrees and 273.1 degrees, rounded to the nearest tenth of a degree.

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The number of times more that Gina can play the playlist of children's songs in an hour would be 94. 7 times.

The playlist that Gina made of children's songs. In an hour, the number of seconds we have is :

= 60 secs x 60 mins

= 3, 600 seconds

The number of times that "Row, Row, Row Your Boat" can be played is:

= 3, 600 / 8

= 450 times

The number of times that Gina can play "Twinkle, Twinkle, Little Star" is :

= 3, 600 / 20

= 180 times

The number of times more :

= 450 - 180

= 270 times

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The value of x in the intersecting chord is determined as 18.6.

The value of x is calculated by applying intersecting chord theorem, which states that the angle at center is equal to the arc angle of the two intersecting chords.

m ∠EDF  = arc angle EF

50 = 5x - 43

The value of x is calculated as follows;

5x = 50 + 43

5x = 93

divide both sides by 5;

5x/5 = 93/5

x = 18.6

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The population model is complete, with p(t) = 10000e(0.2197t), and the city's population is growing at a rate of about 0.2197 each year.

To determine the growth rate and complete the model for the population of a city founded in January 2009, we need to use the given information and equation, p(t) = 10000e^(rt), where t is the time in years, and r is the growth rate.

Determine the time (t) in years from January 2009 to 2014.
t = 2014 - 2009 = 5 years

Substitute the given population (30,000) and time (5 years) into the equation.
30,000 = 10000e^(5r)

Solve for the growth rate (r).
First, divide both sides by 10000:
3 = e^(5r)

Now, take the natural logarithm of both sides to isolate the exponent:
ln(3) = 5r

Finally, divide both sides by 5:
r = ln(3)/5 ≈ 0.2197

So, the growth rate is approximately 0.2197 per year.

Complete the model with the calculated growth rate.
p(t) = 10000e^(0.2197t)

The growth rate of the city's population is approximately 0.2197 per year, and the completed model for the population is p(t) = 10000e^(0.2197t).

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The approximate area of the circular fenced-in section is 950.5 square meters.

The circumference of a circle is given by the formula 2πr, where r is the radius of the circle. We are given that the circumference of the fenced-in section is 55 meters, so we can set up the equation:

2πr = 55

We can solve for r by dividing both sides by 2π:

r = 55/(2π)

We are asked to find the area of the section, which is given by the formula A = πr². Substituting our expression for r, we get:

A = π(55/(2π))²

Simplifying, we get:

A = (55²/4)π

Using the approximation 22/7 for π, we get:

A ≈ (55²/4)(22/7)

A ≈ 950.5

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The experimental and theoretical probability of the name Fred being chosen is 0.11 and 0.167  respectively.

The question is asking for the experimental and theoretical probabilities of choosing the name Fred when six different names are put into a hat and a name is chosen 100 times.

To find the experimental probability of choosing the name Fred, divide the number of times Fred is chosen by the total number of trials (100 times). In this case, Fred is chosen 11 times.

Experimental probability of choosing Fred = (number of times Fred is chosen) / (total number of trials)
= 11 / 100
= 0.11 or 11%

For the theoretical probability, since there are six different names in the hat and each name has an equal chance of being chosen, the probability of choosing Fred is:

Theoretical probability of choosing Fred = 1 / 6
≈ 0.167 or 16.67%

If the number of names in the hat were different, the theoretical probability would change because the denominator (total number of names) would be different. For example, if there were 5 names instead of 6, the theoretical probability of choosing Fred would be 1/5 or 20%.

The experimental probability would also likely change since the outcomes of the trials would be different with a different number of names.

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Distance time speed of different animals are:

Lion = 60 km/h  Sailfish = 130 km/h Peregrine Falcon  = 389 km/h Cheetah = 120 km/h  Springbok = 100 km/h Golden Eagle  = 320 km/h.

Here are the answers for each one:

1. Lion: The lion traveled a distance of 30 kilometers in a time of 30 minutes. To find the lion's speed, we can use the formula: speed = distance ÷ time. So, the lion's speed was 30 km ÷ 0.5 hours = 60 km/h.

2. Sailfish: The sailfish traveled a distance of 195 kilometers in a time of 1 hour and 30 minutes, which is the same as 1.5 hours. To find the sailfish's speed, we can again use the formula: speed = distance ÷ time. So, the sailfish's speed was 195 km ÷ 1.5 hours = 130 km/h.

3. Peregrine Falcon: The peregrine falcon traveled a distance of 778 kilometers in a time of 120 minutes, which is the same as 2 hours. To find the peregrine falcon's speed, we can once again use the formula: speed = distance ÷ time. So, the peregrine falcon's speed was 778 km ÷ 2 hours = 389 km/h.

4. Cheetah: The cheetah traveled a distance of 30 kilometers in a time of 15 minutes, which is the same as 0.25 hours. To find the cheetah's speed, we can use the formula: speed = distance ÷ time. So, the cheetah's speed was 30 km ÷ 0.25 hours = 120 km/h.

5. Springbok: The springbok traveled a distance of 10 kilometers in a time of 6 minutes, which is the same as 0.1 hours. To find the springbok's speed, we can use the formula: speed = distance ÷ time. So, the springbok's speed was 10 km ÷ 0.1 hours = 100 km/h.

6. Golden Eagle: The golden eagle traveled a distance of 240 kilometers in a time of 45 minutes, which is the same as 0.75 hours. To find the golden eagle's speed, we can use the formula: speed = distance ÷ time. So, the golden eagle's speed was 240 km ÷ 0.75 hours = 320 km/h.

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The solution to the integral is ∫ dx/|x|*√4x²-16 is ∫ dx/|x|*√(4x²-16) = 2 ln|sin(θ)| + CC

We can then rewrite the integral in terms of u as:

∫ dx/|x|*√(4x²-16) = ∫ du/|u|*√(u²-16)

Next, we can use another substitution of the form u = 4sec(θ), which will transform the integrand into: 2/(|sec(θ)|*√(sec²(θ)-1)) dθ

Using the identity sec²(θ)-1=tan²(θ), we can simplify the integrand to:

2/(|sec(θ)|sqrt(sec²(θ)-1)) = 2/(|sec(θ)||tan(θ)|)

We can then split the integral into two parts, corresponding to the two possible signs of sec(θ):

∫ du/|u|*√(u²-16) = 2 ∫ dθ/(sec(θ)tan(θ))

= 2 [ ∫ dθ/(sec(θ)tan(θ)), for sec(θ)>0

∫ dθ/(-sec(θ)tan(θ)), for sec(θ)<0 ]

The integral ∫ dθ/(sec(θ)tan(θ)) can be solved using the substitution u = sin(θ), which gives:

∫ dθ/(sec(θ)tan(θ)) = ∫ du/u = ln|u| + C = ln|sin(θ)| + C

Therefore, the indefinite integral is:

∫ dx/|x|*√(4x²-16) = 2 ln|sin(θ)| + C

where θ satisfies the equation 4sec(θ) = 2x.

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The bases could be circled 40 times in 50 minutes at the same rate.

For this issue's solution, let's use unit rates.

In order to calculate the unit rate,

Considering that the player went 12 times around the bases in 15 minutes, the unit rate is 12/15, =  0.8 times per minute.

In a minute, the player would have circled the bases 0.8 times. By dividing the unit rate by the number of minutes, we can calculate how many times the bases could be circled in 50 minutes:

50 minutes x  0.8 times each minute = 40 times.

Therefore, the bases could be circled 40 times in 50 minutes at the same rate.

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Answer:

side length of cube=4inch

Step-by-step explanation:

volume of cube(V)=64sqinch

length of side(l)=?

Now,

volume of cube(V)=l^3

64=l^3

∛64=l

4=l

l=4inch

The weight of the component is of length of 12 feet, a width of 13. 5 feet, and a height of 15 feet, and weighs on average 0. 47 pounds per cubic foot is 1142 lbs.

To find the weight of the contents in the container, we need to first find the volume of the container.

The formula for the volume of a right rectangular prism is length x width x height.

So, the volume of the container is:
12 ft x 13.5 ft x 15 ft = 2430 cubic feet

Next, we need to multiply the volume by the weight per cubic foot:
2430 cubic feet x 0.47 lbs/cubic foot = 1141.1 lbs

Rounding to the nearest pound, the weight of the contents in the container is approximately 1142 lbs.

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To find the volume generated, we need to use the formula for volume of revolution. We are revolving the area bounded by the curve y=x, the line x=4 and the x-axis about the y-axis.

First, we need to find the limits of integration for x. The curve y=x intersects the line x=4 at y=4, so we integrate from x=0 to x=4.

Next, we need to find the radius of the rotation. The radius is the distance from the y-axis to the curve at each value of x. Since we are revolving about the y-axis, the radius is simply x.

Using the formula for volume of revolution, we get:

V = π∫(radius)^2 dx from 0 to 4

V = π∫x^2 dx from 0 to 4

V = π[x^3/3] from 0 to 4

V = π[(4^3/3) - (0^3/3)]

V = (64π/3)

Therefore, the volume generated when the area bounded by the curve y=x, the line x=4 and the x-axis is revolved about the y-axis is (64π/3).
To find the volume generated when the area bounded by the curve y=x^2, the line x=4, and the x-axis is revolved around the y-axis, we'll use the disk method. The formula for the disk method is:

Volume = π * ∫ [R(x)]^2 dx

Here, R(x) is the radius function and the integral is taken over the given interval on the x-axis. In this case, R(x) = x and the interval is from 0 to 4.

Volume = π * ∫ [x]^2 dx, with the integral from 0 to 4

Now, we'll evaluate the integral:

Volume = π * [ (1/3)x^3 ](0 to 4)
Volume = π * [ (1/3)(4)^3 - (1/3)(0)^3 ]
Volume = π * [ (1/3)(64) - 0 ]
Volume = π * [ (64/3) ]

So, the volume generated is (64/3)π cubic units.

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Experimental probability of landing on blue = 1/12 and experimental probability and theoretical probability are not close.

1.

To find the experimental probability of landing on blue, we need to divide the number of times it landed on blue by the total number of spins.

Experimental probability of landing on blue = Number of times landed on blue / Total number of spins

Here, the spinner was spun 12 times and landed on blue 1 time.

Experimental probability of landing on blue = 1/12

2.

The theoretical probability of landing on blue is the ratio of the number of blue spaces to the total number of spaces on the spinner. Since there is only one blue space out of four total spaces, the theoretical probability is 1/4 or 0.25.

The experimental probability = 1/12 = 0.083

So, the experimental probability and theoretical probability are not close.

A possible reason for the discrepancy is likely due to the small sample size of spins. With a larger number of spins, the experimental probability should converge closer to the theoretical probability. This is known as the law of large numbers in probability theory.

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The lateral surface area about x-axis is 114.1 square units.

To find the lateral surface area of the cone generated by revolving the line segment y=9/2x, 0≤x≤9 about the x-axis, we first need to find the length of the slant height of the cone.

We can think of the cone as being formed by rotating a right triangle about the x-axis.

The line segment y=9/2x intersects the x-axis at (0,0) and (9,81/2).

This forms a right triangle with base 9 and height √(81/2) = (9/2)√2.

The slant height of the cone is the hypotenuse of this right triangle, which can be found using the Pythagorean theorem:

l = √(9² + (9/2√2)²) = √(81 + 81/8) = (9/√2)√(9/8) = (9/2)√2

The lateral surface area of the cone can then be found using the formula:

L = πrl

where r is the radius of the base of the cone (which is equal to half the base of the right triangle, or 9/2) and

l is the slant height we just found.

Substituting in the values, we get:

L = π(9/2)(9/2)√2 = (81/4)π√2 ≈ 114.1

Therefore, the lateral surface area of the cone generated by revolving the line segment y=9/2x, 0≤x≤9 about the x-axis is approximately 114.1 square units.

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Deli should charge $24.50 for the 50-inch family sub.

In a transaction, the price of something refers to amount of money that you have to pay in order to buy it. To make the prices comparable, we can use the unit price which is as follows>

The price per inch of 6-inch sub is:

= $2.95 / 6 inches

= $0.49/inch

To make 50-inch sub price, we will solve as:

= $0.49/inch * 50 inches

= $24.50

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If 58% of the birthday cake was left over from the party, then 42% of the cake was consumed during the party. That's why, each person would get approximately 8.29% of the original cake as a leftover piece the next day.

Let's assume that the original cake was divided equally among the guests during the party.
So, if 42% of the cake was shared among the guests during the party, and there were 7 people in total, each person would have received 6% of the cake during the party.
Now, the leftover 58% of the cake is shared among the 7 people the next day. To find out how big a piece of the original cake each person gets, we need to divide 58% by 7:
58% / 7 = 8.29%
Therefore, each person would get approximately 8.29% of the original cake as a leftover piece the next day.

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The probability of getting an even number or a number less than 8 is:

P = 0.83

The probability is equal to the quotient between the number of outcomes for the given event and the total number of outcomes.

The numbers that are even or less than 8 are:

{1, 2, 3, 4, 5, 6, 7, 8, 10, 12}

So 10 out of the total of 12 outcomes make the event true, then the probability we want to get is the quotient between these numbers:

P = 10/12 = 0.83

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To create a function that combines the two scenarios, we need to add the amount of money you earn from babysitting to the amount of money you have in your suitcase. We can represent this with the following function:

f(x) = s(x) + a(x)

Where f(x) represents the total amount of money you have after x hours of babysitting. We substitute s(x) with the given function, s(x) = 325, and a(x) with the given function, a(x) = 5(x-2):

f(x) = 325 + 5(x-2)

Simplifying this expression, we can distribute the 5 to get:

f(x) = 325 + 5x - 10

And then combine the constant terms:

f(x) = 315 + 5x

So the function that combines the two scenarios is f(x) = 315 + 5x. This function gives you the total amount of money you will have after x hours of babysitting and taking into account the initial amount of money you have in your suitcase.

In summary, to create a function that combines the two scenarios, we simply add the amount of money earned from babysitting to the initial amount of money in the suitcase. The function f(x) = 315 + 5x represents this total amount of money.

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The equation for the red graph is y = f(x - 1) (option a)

Graphs are visual representations of mathematical functions that help us understand their behavior and properties.

In this problem, we are given a black graph that represents the function y=f(x), and we need to choose the equation that represents the red graph. Let's examine each option and see which one fits the red graph.

Option (a) y = f(x - 1) represents a shift of the function f(x) to the right by one unit. This means that every point on the black graph will move one unit to the right to form the red graph.

However, from the given graph, we can see that the red graph is not a shifted version of the black graph. Therefore, option (a) is not the correct answer.

Hence the correct option is (a).

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Any measurement below 435 inches qualifies as a value less than 435 inches.

To find measurements less than 435 inches, you simply need to consider any value below 435 inches. Here's a step-by-step explanation:

1. Understand the question: You are looking for measurements less than 435 inches.
2. Identify the range: The range includes all values below 435 inches.
3. Provide examples: Examples of measurements less than 435 inches can be 400 inches, 350 inches, 250 inches, 100 inches, and so on.

Remember, any measurement below 435 inches qualifies as a value less than 435 inches.

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The original house has 70 square feet of flooring.

If the ratio of the miniature house to the original structure is 2:35, then we can say that the miniature house is 2/35th the size of the original house in terms of floor area. Let's assume that the original house has x square feet of flooring. Then, we can set up a proportion based on the ratios:

2/35 = 4/x

Solving for x, we get:

x = 70

Therefore if the ratio of ambers miniature house to the original structure is 2:35 and the miniature requires 4 square feet of the flooring then original house has 70 square feet of flooring.

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The table shows the calculated curved surface area, total surface area, and vertical surface area for various geometric objects, including cylinders, cones, and spheres. The missing values are found for each object, with a given value of t = 3.

Radius is 4 cm

Height is 72 cm

curved surface area of cylinder

2πrt = 2π(4)(72) = 576π cm²

total surface area

2πr(r+h) = 2π(4)(76) = 304π cm²

vertical surface area

2πrh = 2π(4)(72) = 576π cm²

Radius is 4 cm

Height is 60 cm

curved surface area of cylinder of cone

πr√(r²+h²) = π(4)√(4²+60²) = 124π cm²

total surface area

πr(r+√(r²+h²)) = π(4)(4+√(4²+60²)) = 140π cm²

vertical surface area

πr√(r²+h²) = π(4)√(4²+60²) = 124π cm²

total surface area of sphere

0.48 m² = 48000 cm²

curved surface area of cylinder

Radius is 5 cm

Height 2 m = 200 cm

2πrt = 2π(5)(200) = 2000π cm²

total surface area

2πr(r+h) = 2π(5)(205) = 2050π cm²

vertical surface area

2πrh = 2π(5)(200) = 2000π cm²

curved surface area of cylinder

Radius is 6 cm

Height 10 cm

πr√(r²+h²) = π(6)√(6²+10²) = 34π cm²

total surface area

πr(r+√(r²+h²)) = π(6)(6+√(6²+10²)) = 78π cm²

vertical surface area

πr√(r²+h²) = π(6)√(6²+10²) = 34π cm²

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If the largest single rough diamond ever found, the Cullinan diamond, weighed 3106 carat, it weighs approximately 621,200 milligrams and 1.37 pounds.

The Cullinan Diamond, the largest single rough diamond ever found, weighed 3,106 carats. To convert its weight to milligrams and pounds, we'll use the conversion factor of 1 carat = 0.2 grams.

First, convert carats to grams:
3,106 carats * 0.2 grams/carat = 621.2 grams

Next, convert grams to milligrams:
621.2 grams * 1,000 milligrams/gram = 621,200 milligrams

Lastly, convert grams to pounds:
621.2 grams * 0.00220462 pounds/gram ≈ 1.37 pounds

So, the Cullinan Diamond weighs approximately 621,200 milligrams and 1.37 pounds.

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The mean of this distribution is 26.5. The standard deviation is 8.0623. The probability that the number will be exactly 36 is P (x = 36) = 0.0286. The probability that the number will be between 21 and 23 is P (21 < x < 23) = 0.0400. The probability that the number will be larger than 26 is P (x > 26) = 0.2857. P (x > 16 | x < 18) = undefined. The 49th percentile is 29.3700. The minimum for the lower quartile is 19.75.

a. The mean of a uniform distribution is the average of the maximum and minimum values, so in this case, the mean is:

mean = (12 + 41) / 2 = 26.5

Therefore, the mean of this distribution is 26.5.

b. The standard deviation of a uniform distribution is given by the formula:

sd = (b - a) / sqrt(12)

where a and b are the minimum and maximum values of the distribution, respectively. So in this case, the standard deviation is:

sd = (41 - 12) / sqrt(12) = 8.0623

Therefore, the standard deviation of this distribution is 8.0623.

c. Since the distribution is uniform, the probability of getting any specific value between 12 and 41 is the same. Therefore, the probability of getting exactly 36 is:

P(x = 36) = 1 / (41 - 12 + 1) = 0.0286

Rounded to four decimal places, the probability is 0.0286.

d. The probability of getting a number between 21 and 23 is:

P(21 < x < 23) = (23 - 21) / (41 - 12 + 1) = 0.0400

Rounded to four decimal places, the probability is 0.0400.

e. The probability of getting a number larger than 26 is:

P(x > 26) = (41 - 26) / (41 - 12 + 1) = 0.2857

Rounded to four decimal places, the probability is 0.2857.

f. The probability that x is greater than 16, given that it is less than 18, can be calculated using Bayes' theorem:

P(x > 16 | x < 18) = P(x > 16 and x < 18) / P(x < 18)

Since the distribution is uniform, the probability of getting a number between 16 and 18 is:

P(16 < x < 18) = (18 - 16) / (41 - 12 + 1) = 0.0400

The probability of getting a number greater than 16 and less than 18 is zero, so:

P(x > 16 and x < 18) = 0

Therefore:

P(x > 16 | x < 18) = 0 / 0.0400 = undefined

There is no valid answer for this question.

g. To find the 49th percentile, we need to find the number that 49% of the distribution falls below. Since the distribution is uniform, we can calculate this directly as:

49th percentile = 12 + 0.49 * (41 - 12) = 29.37

Rounded to four decimal places, the 49th percentile is 29.3700.

h. The lower quartile (Q1) is the 25th percentile, so we can calculate it as:

Q1 = 12 + 0.25 * (41 - 12) = 19.75

Therefore, the minimum for the lower quartile is 19.75.

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The gradient in the given equation is 0.5.

The given linear equation is y=10+0.5x where x is the number of words and y is the total cost of the bill in pounds.

a) When x=0, we get y=10

So, at (0, 10) the line intercept the y-axis.

b) $10 is the bill when there are no words in the advert.

c) Compare y=0.5x+10 with y=mx+c, we get m=0.5

So, the gradient of the line is 0.5

d) From equation, we can see the cost of each word is $0.5.

Therefore, the gradient in the given equation is 0.5.

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Brody would need an interest rate of 4.5% compounded daily.

How to calculate interest rate of investment?

We can use the compound interest formula to solve the problem:

[tex]A = P(1 + r/n)^(^n^t^)[/tex]

where:

A = final amount of money ($790)

P = initial investment ($350)

r = interest rate (unknown)

n = number of times interest is compounded per year (365, since interest is compounded daily)

t = time in years (18)

So, we can plug in the given values and solve for r:

[tex]790 = $350(1 + r/365)^(^3^6^5^1^8^)[/tex]

[tex]2.25714 = (1 + r/365)^(^3^6^5^1^8^)[/tex]

[tex]ln(2.25714) = ln[(1 + r/365)^(^3^6^5^1^8^)][/tex]

[tex]ln(2.25714) = 18ln(1 + r/365)[/tex]

[tex]ln(2.25714)/18 = ln(1 + r/365)[/tex]

[tex]e^(^l^n^(^2^.^2^5^7^1^4^)^/^1^8^)^ =^ 1^ +^ r^/^3^6^5[/tex]

[tex]1.0345 = 1 + r/365[/tex]

[tex]r/365 = 0.0345[/tex]

[tex]r = 12.5925[/tex]

Therefore, Brody would need an interest rate of approximately 12.6% (rounded to the nearest tenth of a percent) in order to end up with $790 after 18 years with daily compounding.

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