Roller Coaster Crew
Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle the math behind some simple curves in the coaster's track.

Part A

The first part of Ray and Kelsey's roller coaster is a curved pattern that can be represented by a polynomial function.

Ray and Kelsey are working to graph a third-degree polynomial function that represents the first pattern in the coaster plan. Ray says the third-degree polynomial has four intercepts. Kelsey argues the function can have as many as three zeros only. Is there a way for the both of them to be correct? Explain your answer.

Kelsey has a list of possible functions. Pick one of the g(x) functions below and then describe to Kelsey the key features of g(x), including the end behavior, y-intercept, and zeros.
g(x) = (x + 2)(x − 1)(x − 2)
g(x) = (x + 3)(x + 2)(x − 3)
g(x) = (x + 2)(x − 2)(x − 3)
g(x) = (x + 5)(x + 2)(x − 5)
g(x) = (x + 7)(x + 1)(x − 1)

Create a graph of the polynomial function you selected from Question 2.

Part B

The second part of the new coaster is a parabola.

Ray needs help creating the second part of the coaster. Create a unique parabola in the pattern f(x) = (x − a)(x − b). Describe the direction of the parabola and determine the y-intercept and zeros.

Create a graph of the polynomial function you created in Question 4.

Part C

Now that the curve pieces are determined, use those pieces as sections of a complete coaster. By hand or by using a drawing program, sketch a design of Ray and Kelsey's coaster that includes the shape of the g(x) and f(x) functions that you chose in the Parts A and B. You do not have to include the coordinate plane. You may arrange the functions in any order you choose, but label each section of the graph with the corresponding function for your instructor to view.

Part D

Create an ad campaign to promote Ray and Kelsey's roller coaster. It can be a 15-second advertisement for television or radio, an interview for a magazine or news report, or a song, poem, or slideshow presentation for a company. These are just examples; you are not limited to how you prepare your advertisement, so be creative. Make sure to include a script of what each of you will say if you are preparing an interview or a report. The purpose of this ad is to get everyone excited about the roller coaster.

The correct vocab in written as;

DC = semi-circle

<ECD = minor arc

<ECF = point of tangency

CF = chord

To determine the corresponding terms, we need to take note of the following definitions;

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The value of the surd form √14 is 3. 74

The square root of a number is a value that, when multiplied by itself, equals the original number.

It is represented by the symbol √ and is a way to find the side length of a square given its area or the length of a diagonal in a right triangle.

From the information given, we have that;

The expression is √14

We can see that the value √14 is a surd which can no longer be simplified into a whole or rational number.

To determine the square root, we use the calculator

√14

3. 7416

In the nearest tenth, we get;

3. 74

Hence, the value is 3. 74

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Answer:

1) f(-2) = -2 + 3

2) f(-2) = 1

Answer: Parallelogram

Step-by-step explanation: A parallelogram is a quadrilateral with opposite sides parallel. If ZL, ZM, ZN, and ZO are approximately equal, it implies that the opposite sides LM and NO are parallel, and the opposite sides LO and MN are also parallel.

It may not be a rectangle: While a parallelogram is a quadrilateral with opposite sides parallel, a rectangle is a special type of parallelogram with additional properties, such as all angles being right angles. The given information does not provide any information about the angles of the quadrilateral, so we cannot conclude that it is a rectangle.

It may not be a rhombus: A rhombus is a special type of parallelogram in which all sides are equal. The given information only states that the angles ZL, ZM, ZN, and ZO are approximately equal, but it does not provide any information about the lengths of the sides LM, LO, MN, or NO. Therefore, we cannot conclude that LMNO is a rhombus based solely on the given information.

The two solutions that satisfy the equation 3x^2 + 2x = 6 when rounded to two decimal places are x = 1.12 and x = −1.79. So, correct option is A.

To solve for x in the equation 3x^2 + 2x = 6, we need to rearrange the terms and use the quadratic formula:

3x^2 + 2x - 6 = 0 (subtract 6 from both sides)

x = (-b ± √(b^2 - 4ac)) / 2a (quadratic formula)

In this equation, a = 3, b = 2, and c = -6, so we can substitute those values into the quadratic formula:

x = (-2 ± √(2^2 - 4(3)(-6))) / 2(3)

x = (-2 ± √(4 + 72)) / 6

x = (-2 ± √(76)) / 6

Simplifying this expression, we get:

x = (-2 ± 2√(19)) / 6

x = (-1 ± √(19)) / 3

Rounding these solutions to two decimal places, we get:

x = -1.79 or x = 1.12

Therefore, the answer is (a) x = 1.12 and x = -1.79.

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Answer:

x = 1.12 and x = −1.79

Step-by-step explanation:

i got it right on my quiz

The lowest price of the product that gives a monthly profit of $1550 is $25.

To find the lowest price of the product that gives a monthly profit of $1550, we can substitute P = 1550 into the profit equation P = -x + 105x - 1050 and solve for x.

P = -x + 105x - 1050

1550 = -x + 105x - 1050 (Substitute P = 1550)

1550 + x = 105x - 1050 (Add x to both sides)

x + 1050 = 105x - 1550 (Add 1550 to both sides)

1050 = 105x - x - 1550 (Rearrange terms)

1050 = 104x - 1550 (Combine like terms)

1050 + 1550 = 104x (Add 1550 to both sides)

2600 = 104x (Combine like terms)

2600/104 = x (Divide both sides by 104)

25 = x (Simplify)

So, the lowest price of the product that gives a monthly profit of $1550 is $25.

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The line of reflection must be the line halfway between the x-coordinates of the corresponding vertices of each polygon. This line is x=4.

So, the line of reflection is x=4.

A line of reflection is a line used in mathematics that functions like a mirror, reflecting all points on one side of the line onto the other side so that each point is equally distant from the line as its reflected point on the other side. It is also known as the mirror line or the axis of reflection.

To determine the line of reflection that maps polygon ABCDE to polygon A' B' C' D' E', we need to look for a line that is equidistant from each corresponding pair of points.

Reflection across the x-axis or y-axis will not work because the corresponding vertices of the two polygons have different y-coordinates or x-coordinates, respectively.

Reflection across x=5 or y=6 will also not work because the line is not equidistant from each corresponding pair of points.

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The degree measure of the smaller angle formed by the hour and minute hands of a 12-hour clock at 2:48 is 85 degrees.

The hour hand is between the 2 and the 3, and since it's 2:48, it's closer to the 3. To be more precise, it's at 2.8 on the clock face .

The minute hand is pointing at the 8, as it's 48 minutes past the hour.

To find the angle between the hands, we need to find the difference between their positions and multiply it by 30 .

So the angle formed by the hour and minute hands at 2:48 is:

| 30 × (2.8/12 - 8) | = | -85 | = 85 degrees.

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Answer:

195.5 sq. ft.

Step-by-step explanation:

If you ever wondered how to find the area of your kitchen floor using a scale drawing, you're in luck! I'm going to show you how to do it in a few easy steps. First, you need to know the scale factor, which is the ratio of the scale drawing to the actual floor. In this case, the scale factor is 1 in = 2 ft, which means that one inch on the paper is equal to two feet on the ground. Pretty neat, huh?

Next, you need to multiply the scale drawing dimensions by the scale factor to get the actual floor dimensions. For example, if the scale drawing is 5 3/4 inches long and 8 1/2 inches wide, you multiply those numbers by 2 to get 11 1/2 feet long and 17 feet wide. That's how big your kitchen floor really is!

Finally, you need to multiply the actual floor dimensions to get the area of the floor. This is where it gets tricky, because you have to deal with fractions and decimals. But don't worry, I'll walk you through it. You can use the distributive property to multiply two numbers with fractions. For example, (11 1/2) x (17) = (11 x 17) + (1/2 x 17) = 187 + 8.5 = 195.5. That's the answer! Your kitchen floor has an area of 195.5 square feet. Congratulations, you just learned how to use a scale drawing to find the area of your kitchen floor!

I hope you enjoyed this lesson and found it funny. If not, maybe you should try a different scale factor or a different kitchen. Just kidding!

The expression (4d + 7) + (4d² + 8d + 9) simplifies to 4d² + 12d + 16.

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

(4d + 7) + (4d² + 8d + 9)

We can simplify the expression by combining like terms:

(4d + 7) + (4d² + 8d + 9) = 4d² + (4d + 8d) + (7 + 9)

= 4d² + 12d + 16

Therefore, (4d + 7) + (4d² + 8d + 9) simplifies to 4d² + 12d + 16.

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Answer:

If the expected value of the game is 5.6, this means that on average you can expect to earn 5.6 points per game if you were to play the game many times. However, since the point values available in the game are 20, 10, and 2, you cannot earn exactly 5.6 points in any single game.

Instead, over many games, the average number of points you would earn per game would approach the expected value of 5.6. For example, if you played the game 100 times, you might earn 2000 points if you got 20 points every time, 1000 points if you got 10 points every time, or 200 points if you got 2 points every time. But if you averaged your points across all 100 games, the average should be close to the expected value of 5.6 points per game.

The estimate of the annual snowfall in 78th year is 29.88 inches. The Option C.

Using the given information, we can use the linear equation y = mx + b, where y represents the annual snowfall and x represents the number of years since 1920.

The initial measurement in 1920 was 48.6 inches, so b = 48.6.

The decrease in annual snowfall is 0.24 inches per year, so m = -0.24.

The equation is y = -0.24x + 48.6.

We will plug in x = 78 into the equation and solve for y:

y = -0.24(78) + 48.6

y = -18.72 + 48.6

y = 29.88.

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The IQR for both runs is 8 minutes.

If there are outliers or extreme values ​​in the data set, we summarize the typical value using the median instead of the mean. When there are outliers in a data set, the variation is often summarized by a statistic called the interquartile range, which is the difference between the first and third quartiles.

 Based on the given box pairs, we can make the following comparisons:

The average wait time at Thrill Tower is about 5 minutes shorter than the average wait time at River Rapids. That's because the centerline of Thrill Tower is  about 5 units below the centerline of River Rapids.  The IQR (interquartile range) for both times is not  directly in the box. However, we can estimate this by finding the distance between the first quartile (Q1) and the third quartile (Q3) of each run. From the box plot of Thrill Tower, we can see that Q1 is around 6 and Q3 is around 14. Therefore, the IQR for Thrill Tower is:

 Thrill Tower IQR = Q3 - Q1 = 14 - 6 = 8 minutes

From the box plot for River Rapids, we can see that Q1 is about 8 and Q3 is about 16. Therefore, the IQR for River Rapids is:

 River Rapids IQR = Q3 - Q1 = 16 - 8 = 8 minutes

Therefore, the IQR for both runs is 8 minutes.

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Answer: HERE IS THE ANSWER BELOW :)

The IQR is the best measure of variability, and it equals 3.

The appropriate measure of variability for the data in the box plot is the interquartile range (IQR), which is a measure of the spread of the middle 50% of the data.

From the box plot, we can see that the lower quartile (Q1) is located at 17, the upper quartile (Q3) is located at 20, and the median is located at 19. The IQR can be calculated as the difference between the upper and lower quartiles:

IQR = Q3 - Q1 = 20 - 17 = 3

Therefore, the IQR is 3 and it is the best measure of variability for the given data. The range, which is the difference between the maximum and minimum values (24 - 12 = 12), is not the best measure of variability in this case because it is affected by extreme values that may not be representative of the typical spread of the data.

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If in the mail, she received 14 envelopes, and each envelope included $2. 70,Sarah received a total of $37.80 in the mail.

Sarah received a total of 14 envelopes, and each envelope had $2.70. To find out how much money she received in total, we can multiply the number of envelopes by the amount of money in each envelope:

Total money = 14 × $2.70

We can simplify the expression by first multiplying the whole number, 14, by the tenths value of $2.70, which is $0.70:

Total money = $37.80

This amount of money is the sum of all the money in the 14 envelopes she received. It can be useful to double-check the answer by adding up the amounts in each envelope manually, but in this case, it is not necessary since we have already calculated the total.

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The probability for the possibility on a failing the exam is  1/3 , shown on the scale.

A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

Any collection of results constitutes an event. Events are represented by capital letters, such as A and B. For instance, if the experiment involves flipping a single fair coin, event A might only receive one head. P(A) represents the probability of an event A.

Given that-

probability = number of favourable outcome / total outcome

number of favourable outcome = 1

number of total outcome = 3

probability = 1/3

Thus, the probability for the possibility on a  failing exam is 1/3 , shown on the scale.

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The general form of the equation is x² + y² - 10x - 12y + 60 = 0.

The general form of the equation of a circle is given by:

x² + y² + Cx + Dy + E = 0

Where C, D and E are constant

Given the standard form of the equation of a circle as (x−5)² + (y−6)² = 1, we can rewrite it as follow:

(x−5)² + (y−6)² = 1

(x² - 10x + 25) + (y² - 12y + 36) = 1        (Expand the brackets)

x² + y² - 10x - 12y + 25 + 36 - 1 = 0

x² + y² - 10x - 12y + 60 = 0

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The value of x and y is 2 , -2

The equation are as follows:

x+2y=-2....(i)

-3x+2y=-10.....(ii)

Now, Solving each system of equations by adding and subtracting:

And, find the value of x and y

Multiply by 3 in equation (i) we get:

3x + 6y = - 6 ---(iii)

And add the equations (ii) and (iii)

3x + 6y + (-3x) + 2y = -6 - 10

6y + 2y = -16

8y = -16

y = -2

Now, For solving the value of x :

Subtract the equation (i) and (ii), we get:

x + 2y - (-3x) - 2y = -2 + 10

x + 3x =  8

4x = 8

x = 2

Now, The value of x and y is 2 , -2

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a) The length of the hypotenuse AB is 15.

b) The angle ∠A is approximately 53 degrees.

c) The angle ∠C is 90 degrees.

d) The angle ∠B is approximately 37 degrees.

a) To find the length of the hypotenuse AB, we can use the Pythagorean theorem, which states that in a right triangle, the sum of the squares of the legs is equal to the square of the hypotenuse. In this case, we have:

AB² = AC² + CB²

AB² = 12² + 9²

AB² = 144 + 81

AB² = 225

AB = √225

AB = 15

Therefore, the length of the hypotenuse AB is 15.

b) To find the angle ∠A, we can use trigonometry. The sine of an angle is the ratio of the opposite side to the hypotenuse. In this case, we have:

sin(∠A) = AC/AB

sin(∠A) = 12/15

sin(∠A) = 0.8

Taking the inverse sine of 0.8, we get:

∠A = sin⁻¹(0.8)

∠A ≈ 53

Therefore, the angle ∠A is approximately 53 degrees.

c) Since angle ∠C is the right angle, its measure is 90 degrees.

d) To find the angle ∠B, we can use the fact that the sum of the angles in a triangle is 180 degrees. Therefore:

∠B = 180 - ∠A - ∠C

∠B = 180 - 53 - 90

∠B ≈ 37

Therefore, the angle ∠B is approximately 37 degrees.

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The expression 1,436,492÷2 has a value of 718246 when evaluated because we divided the numbers

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

1,436,492÷2

The above statement is a quotient expression that divide the values of 1,436,492 and 2

Also, there is no need to check if there are like terms in the expression or not

This is  because we are dividing the factors

So, we have

1,436,492÷2 = 718246

This means that the value of the expression is 718246

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Answer:

A

Step-by-step explanation:

because when we say statical data we mean numerical data (asking u about number) so the answer yes i have 5 or no they r more or less.

The domain of the function plotted is

In mathematics, the domain of a function is the set of all possible values of the input (independent variable) for which the function is defined.

So we can say that, it is the set of all possible values that we can substitute into the function and get a valid output (dependent variable).

In the graph, watching the x axis which is the input variables we can see that the domain is all real numbers from -4 to 4

In general, the domain of a function depends on the specific form of the function and any restrictions or conditions that may apply to the input values.

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die

Step-by-step explanation:

So, from the given options, the scatter plot that shows a positive linear association is option B.

A scatter plot is a type of graph that displays the relationship between two variables. Each data point in the scatter plot represents a pair of values for the two variables being plotted, with one variable on the x-axis and the other on the y-axis. Scatter plots are used to examine the correlation or relationship between the variables. If the points on the scatter plot form a pattern that slopes upwards as you move from left to right, it indicates a positive linear association between the variables. If the pattern slopes downwards, it indicates a negative linear association. If there is no pattern or trend, it indicates no correlation between the variables.

Here,

A scatter plot that shows a positive linear association is one where the points on the graph form a pattern that goes upward and to the right.

In option A, the data points do not show a clear upward trend, so this scatter plot does not show a positive linear association.

In option B, there is a clear upward trend in the data points as you move from left to right, so this scatter plot does show a positive linear association.

In option C, the data points do not show a clear upward trend, so this scatter plot does not show a positive linear association.

In option D, the data points do not show a clear upward trend, so this scatter plot does not show a positive linear association.

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The probability that Amber does not arrive at work by 9 am is calculated by summing the probabilities of two scenarios: the bus being on time and Amber not arriving by 9 am and the bus being late and Amber not arriving by 9 am. The calculated probability for her late arrival at work is 17/60.

The subject of this problem is probability. There are two scenarios in which Amber may not arrive at work by 9 am: either the bus is on time but she does not arrive by 9 am or the bus is late and she does not arrive by 9 am.

First, let's consider the probability that Amber's bus arrives on time, which is said to be 5/6. If her bus is on time, the probability that she arrives at work by 9 am is 4/5, which means that the probability she does not arrive by 9 am is 1-4/5 = 1/5. Therefore, the probability that the bus is on time and she does not arrive by 9 am is 5/6 * 1/5 = 1/6.

Alternatively, consider the scenario where the bus is late. We can find the probability of this by subtracting the probability that the bus is on time (5/6) from 1, so the probability that the bus is late is 1/6. If her bus is late, the probability she arrives at work by 9 am is 3/10, implying that the probability she does not arrive by 9 am is 1-3/10 = 7/10. Hence, the probability that the bus is late and she does not arrive at work by 9 am equals 1/6 *7/10 = 7/60.

Thus, the total probability that Amber does not arrive at work by 9 am is 1/6 + 7/60 = 10/60 + 7/60 = 17/60.

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Answer: 24 inches.

Step-by-step explanation:

We can use the formula for the area of a triangle to solve for the length of the base:

A = (1/2)bh

where:

A = the area of the triangle (in this case, 72 square inches)

b = the length of the base (what we're trying to find)

h = the height of the triangle (in this case, 6 inches)

Plugging in the values we know, we get:

72 = (1/2)b(6)

72 = 3b

b = 24

Therefore, the length of the base of the triangle is 24 inches.

Answer:

(1/2)(7 + 12) = 19/2 = 9.5 inches

The requried measure of the middle strip of the trapezoidal prism is 9.5 inches.

Simplification involves applying rules of arithmetic and algebra to remove unnecessary terms, factors, or operations from an expression. The goal is to obtain an expression that is easier to work with, manipulate, or solve.

Here,
The purse shown is a trapezoidal prism. the front face of the purse has a stripe.

The measure of the mid stripe is given by,
= 1 / 2[ sum of lower and upper strip]
= (1/2)(7 + 12)
= 19/2
= 9.5 inches

Thus, the requried measure of the middle strip of the trapezoidal prism is 9.5 inches.

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Answer:

4 or ≈ 12.6

Step-by-step explanation:

L = r * θ

r = 12

θ = 60 = (/3) when converted to radians by multiplying (/180)

then multiply

(/3)*12 = 4 or ≈ 12.6

The population size of the fish species after 5 years is approximately 99.

The population size of the fish species after t years is given by the exponential function P(t)=510(0.72)^t. To find the population size, we simply need to substitute the given value of t in the equation.

For example, if we want to find the population size after 5 years, we substitute t=5 in the equation:

P(5) = 510(0.72)^5

P(5) = 510*0.1934917632

P(5) = 98.680799232

P(5) ≈ 99.

Therefore, the population size of the fish species after 5 years is approximately 99.

We can determine whether the population is growing or decaying by examining the value of the base of the exponential function, which is 0.72 in this case. Since the base is less than 1, we know that the exponential function represents exponential decay. This means that the population of the fish species in the lake is decreasing over time, and the rate of decrease is determined by the value of the base. In this case, the population is decreasing by a factor of 0.72 each year.

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