The Mars Global Surveyor recorded the height of Olympus Mons, the tallest mountain on Mars.
The tallest mountain on Earth is Mt. Everest at approximately 8800 meters. Figure 1 shows a representation of Olympus Mons
compared to Mt. Everest. The values on the y-axis are arbitrary.
Figure 1. Mt. Everest and Olympus Mons
12-
Olympus Mons
10-
8
6-
4
Mt. Everest
Using Figure 1, calculate the approximate height of Olympus Mons and enter it in the space provided.
Olympus Mons Height
meters

Answers

Answer 1

Since the values on the y-axis of the graph are arbitrary and not labeled with specific units, we cannot use the graph to calculate the precise height of Olympus Mons in meters.

However, we can use the information given in the problem to estimate that the height of Olympus Mons is significantly greater than the height of Mt. Everest, which is approximately 8,800 meters. In fact, Olympus Mons is the tallest mountain in the solar system, with a height of approximately 22,000 meters (72,000 feet) from its base on the Martian surface to its summit.

Therefore, an approximate height of Olympus Mons is 22,000 meters.


Related Questions

Order these numbers from least to greatest.

8 6/11

8.838

17/2

8.83

Answers

Answer:

8 6/11 is about 8.545, 17/2 = 8.5

From least to greatest: 17/2, 8 6/11, 8.83, 8.838

Step-by-step explanation:

8 6/11 is a mixed fraction

Converting it to improper fraction

Converting it to improper fraction11*8+6=88+6

Converting it to improper fraction11*8+6=88+6=94

Converting it to improper fraction11*8+6=88+6=9417/2 =8.5

8.838 is approximately 8.84

Having simplified all the values

The values to be arranged are 94, 8.838, 8.5 and 8.83

From smallest to biggest you have:

8.83, 8.838, 8.5, 94

I hope I helped

{(x, y)} : x3 }{ ( x, y ) : y-3} CAN ANYONE GRAPH THIS

Answers

The graph of {(x, y)} : x3 } and { ( x, y ) : y-3} is shown in image.

We have to given that;

Expression is,

⇒ {(x, y)} : x3 } and { ( x, y ) : y-3}

Now, We can find that;

Point (1.672, 4.672) is a solution of the give expression.

Hence, We get;

The graph of {(x, y)} : x3 } and { ( x, y ) : y-3} is shown in image.

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6 is not more than z

Responses

6 < z
6 < z, EndFragment,

6 > z
6 > z , EndFragment,

6 = z
6 = z, EndFragment,

6 < z
6 < z, EndFragment,

Answers

The statement 6 is not more than z can be written in inequality as,

6 < z and 6 = z.

Given statement is that,

6 is not more than z.

We have to find the correct statement related to this.

6 is not greater than z.

So there are two options for inequalities.

6 can be less than z or 6 can be equal to z.

Hence the correct options are 6 < z and 6 = z.

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6. Why is it important for Boolean expressions to be minimized in the design of digital circuits?

Answers

Boolean expressions are mathematical equations that are used to represent logic in digital circuits.

These expressions are made up of Boolean operators such as AND, OR, and NOT, and are used to determine how digital circuits should behave in response to various inputs.
It is important for Boolean expressions to be minimized in the design of digital circuits for several reasons. First, minimizing these expressions can reduce the complexity of the circuit, making it easier to design and maintain. This is because smaller expressions require fewer components and are less likely to result in errors.
Additionally, minimizing Boolean expressions can improve the efficiency and speed of the circuit. This is because smaller expressions require less processing power to execute, which can reduce the overall time it takes for the circuit to respond to inputs.
Overall, minimizing Boolean expressions is an important part of designing efficient and effective digital circuits. By reducing complexity and improving efficiency, circuits can perform more reliably and efficiently, which is essential for many applications.

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Enter the number that makes the equation true. 17
0. 54 +
100
+
100
17
100

Answers

The number that makes the equation 0.54 + 17/100 = x/100 + 17/100 true is 54.

To solve this equation, we want to isolate x on one side of the equation.

Starting with:

0.54 + 17/100 = x/100 + 17/100

We can first simplify the left side by finding a common denominator for 0.54 and 17/100:

0.54 = 54/100

54/100 + 17/100 = 71/100

Now, we can simplify the right side by combining like terms:

x/100 + 17/100 = (x + 17)/100

Substituting these simplifications back into the original equation, we get:

71/100 = (x + 17)/100

To isolate x, we can multiply both sides by 100:

71 = x + 17

Subtracting 17 from both sides, we get:

x = 54

Therefore, the number that makes the equation true is 54.

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The question is -

Enter the number that makes the equation true.

0.54 + 17/100 = x/100 + 17/100

There are 120 calories in 3/4 cups serving of soup. How many calories are there in 2 cups of the soup?

Answers

Answer:

Let c = number of calories.

[tex] \frac{120}{ \frac{3}{4} } = \frac{c}{2} [/tex]

[tex] \frac{3}{4} c = 240[/tex]

[tex]c = 320[/tex]

Ans 960

Step-by-step explanation:

120/3/4 = x/6 Cross multiply: 0.75x = 720 Divide each side of the equation by 0.75 x = 960.

a car of petrol tank is 10.8m long, 25cm wide and 20cm deep how many litres of petrol can it hold?​

Answers

V = lwd;
l = 10.8 m
w = 25 cm = 0.25 m
d = 20 cm = 0.2 m
V = 10.8 • 0.2 • 0.25 = 0.54 m^3

Deepa usa unidades cuadradas para hallar el área de la figura

Answers

The units of your measurements will determine the square units of your final result

How to solve

Calculating the area of a shape is reliant on determining how many square units can be accommodated within the perimeter, without gaps or overlaps.

Here are instructions to help determine this for various shapes:

Rectangle or Square:

Start by gauging both the length (l) as well as width (w) measurements of the rectangle/square.

Compute the dimensions by multiplying the pre-existing values which in turn will give you the overall area; Area = l × w.

The concluding value shall be measured in square units such as e.g., square centimeters, and square inches.

Triangle:

Begin by gauging two factors -- base (b), and height (h) of the triangle. The height refers to the perpendicular measurement from one end of a baseline to its opposite vertex.

Next, obtain the magnitude of the intended dimension by computing the product of base and height measurements before dividing by 2 which leads to arriving at the final area figure: Area = (b × h) / 2

This resultant figure also measures in square units.


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The question in English is:

Deepa uses square units to find the area of ​​the figure

This is an incomplete question, so a general overview was provided above.

Triangle ABC ~ triangle DEF. Use the image to answer the question. Determine the measurement of DF.

Answers

Answer:

3.04

Step-by-step explanation:

df/7.6=4.4/11

11df=4.4×7.6

df=4.4×7.6/11

df=3.04

where Eſe|X] = 0. (a) What is Var(e|X)? (b) What is the asymptotic variance of your OLS estimator of ß? (c) How will you estimate this variance?

Answers

To estimate this variance, we can use the formula Var(ß) = MSE(X'X)^(-1) where MSE is the mean squared error obtained from the OLS regression.

If E[e|X] = 0, then we know that the OLS estimator of ß is unbiased.

The variance of e|X is denoted as Var(e|X) and is equal to σ² where σ is the standard deviation of the error term.

The asymptotic variance of the OLS estimator of ß is denoted as Var(ß) and is given by the formula Var(ß) = σ²(X'X)^(-1) where X is the matrix of predictors and (X'X)^(-1) is the inverse of the matrix X'X.

 Alternatively, we can use the residual standard error (RSE) to estimate σ and then use the formula Var(ß) = RSE²(X'X)^(-1).

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The graph shows Wilson's science scores versus the number of hours spent doing science homework.

A graph titled Wilsons Science Scores shows Hours of Practice in a Week on x axis and Science Scores on y axis. The x axis scale is shown from 0 to 5 at increments of 1, and the y axis scale is shown from 0 to 50 at increments of 5.The ordered pairs 0, 15 and 0.5, 18 and 1, 18 and 1.5, 25 and 2, 30 and 2.5, 35 and 3, 40 and 3.5, 43 and 4, 41 and 4.5, 45 and 5, 48 are shown on the graph. A straight line joins the ordered pairs 0, 14.9 and 5, 50.
What will most likely be Wilson's approximate science score if he does science homework for 6 hours a week? (5 points)

33 points
42 points
52 points
55 points

Answers

Answer:

Since we are given a straight line on the graph that connects the two endpoints, we can assume that Wilson's scores will follow a linear relationship with the number of hours of science homework done. We can use the equation of the line to estimate Wilson's approximate science score for 6 hours of science homework.

From the graph, we can see that the slope of the line is:

slope = (50 - 14.9) / (5 - 0) = 35.1 / 5 = 7.02

This means that Wilson's science score increases by approximately 7.02 for each additional hour of science homework per week.

To estimate Wilson's score for 6 hours of science homework, we can use the equation of the line:

y = mx + b

where y is Wilson's science score, x is the number of hours of science homework per week, m is the slope of the line, and b is the y-intercept of the line.

We can use the point (0, 14.9) on the line to find the value of b:

14.9 = 7.02(0) + b

b = 14.9

Now we can use the equation of the line to estimate Wilson's score for 6 hours of science homework:

y = 7.02(6) + 14.9

y = 42.12 + 14.9

y = 57.02

Therefore, Wilson's approximate science score if he does science homework for 6 hours a week would be around 57.02.

Step-by-step explanation:

I need help on some math homework, I tried doing it myself and I can’t seem to get it. Anybody here to explain it for me and get me the answer?

Answers

An equation for which the solution is the speed of this automobile is 200 = 0.5v + v²/51.2.

What is stopping distance?

In Mathematics and Science, stopping distance can be defined as a measure of the distance between the time when a brake is applied by a driver to stop a vehicle that is in motion and the time when the vehicle comes to a complete stop (halt).

Based on the information provided above, the speed of this car is represented by the following equation;

d = vs + v²/64m

Where:

m is the coefficient of friction.s is the time.v is the speed.d is the stopping distance (in feet).

By substituting the given parameters, we have:

200 = 0.5v + v²/64(0.8)

200 = 0.5v + v²/51.2

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Find an equation for the line that passes through the points (3, -5) and (-5, -3).

Answers

Answer:

y = -1/4x -17/4

Step-by-step explanation:

find answer attached...

Please find minimum value of g. Will mark brainliest.

Answers

When looking for minimum we’re looking at the LOWEST POINT on a graph

When looking for a maximum we’re looking at the HIGHEST POINT

When I’m saying highest point I’m talking the term “vertex”

For example,

I included an image.

The answer to your question is looking for the LOWEST VERTEX

The vertex is (-2,-8) because if you go along the left side of the x-axis you find we stop at -2

And going down on the y-axis we stop at -8

THEREFORE, (-2,-8) is your minimum point.

in this exercise you will use differentials to approxiamate the quantity: sqrt(5.05^2 3.1^2)-sqrt(5^2 3^2) . complete the following steps in order to do this: 1.) find a function z

Answers

Using differentials, we can approximate the quantity sqrt(5.05^2 3.1^2) - sqrt(5^2 3^2) as approximately 0.1555.

To use differentials to approximate the quantity sqrt(5.05^2 3.1^2) - sqrt(5^2 3^2), we need to first find a function z that represents this quantity.

Let z = f(x,y) = sqrt(x^2 y^2) = xy. Then, we have:

z(5.05, 3.1) - z(5, 3) = f(5.05, 3.1) - f(5, 3)

We want to approximate this difference using differentials. To do this, we can use the formula:

Δz ≈ dz = ∂f/∂x dx + ∂f/∂y dy

where Δz is the change in z, dz is the differential of z, ∂f/∂x and ∂f/∂y are the partial derivatives of f with respect to x and y, and dx and dy are small changes in x and y.

Taking partial derivatives of f(x,y) = xy with respect to x and y, we have:

∂f/∂x = y and ∂f/∂y = x

Substituting these into the formula for dz, we get:

dz = y dx + x dy

We can now use this differential to approximate the original quantity as follows:

z(5.05, 3.1) - z(5, 3) ≈ dz = y dx + x dy

Substituting the given values, we have:

z(5.05, 3.1) - z(5, 3) ≈ (3.1)(0.05) + (5.05)(0.01)

Simplifying, we get:

z(5.05, 3.1) - z(5, 3) ≈ 0.1555

Therefore, using differentials, we can approximate the quantity sqrt(5.05^2 3.1^2) - sqrt(5^2 3^2) as approximately 0.1555.

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What is the formula for the volume of an octagon?

Answers

The formula for calculating the volume of an octagonal pyramid is

V = 1/3(Bh)

Formula to determine the volume of an Octagonal pyramid

From the question, we are to determine the formula that can be used to determine the volume of octagonal pyramid.

An octagonal pyramid is a pyramid that has a bottom that's the shape of an octagon and has triangles as sides. It has a total of nine faces. The octagonal base and eight connecting triangles.

The formula for calculating the volume of an octagonal pyramid is

V = 1/3(Bh)

Where V is the volume of the octagonal pyramid

B is the area of the base

and his the perpendicular height

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Calculate the measure of angle X. Round
your answer to the nearest hundredth.
A) 56.25
B)23.45
C)33.75
D)29.05

Answers

Answer:

d-29.05

Step-by-step explanation:

tan^1(5/9) in the calculator which then gives you 29.05

Find the distance between the two points in simplest radical form. (-6,5) and (-3,7)

Answers

Answer:

d = [tex]\sqrt{13}[/tex]

Step-by-step explanation:

The formula for distance, d, between two points is

[tex]d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex], where (x1, y1) are one point and (x2, y2) are another point.  

We can allow (-6, 5) to be our (x1, y1) point and (-3, 7) to be our (x2, y2) point and plug the points into the formula:

[tex]d=\sqrt{(-6-(-3))^2+(5-7)^2}\\ d=\sqrt{(-6+3)^2+(-2)^2}\\ d=\sqrt{(-3)^2+4}\\ d=\sqrt{9+4}\\ d=\sqrt{13}[/tex]

√13 is already in simplest radical form because there are no perfect squares which can be factored out from 13

In a Cartesian coordinate system for a three-dimensional space.
Sphere (S) is represented by equation: [tex](x-1)^2+(y+2)^2+(z-3)^2=25[/tex].
Plane (P) is represented by equation: [tex]x+2y-2z+1=0[/tex].
Line (d) is parallel to (P), passes through the origin and passes through (S) at two separate points A & B. Find the maximum length of AB.

Answers

In a Cartesian coordinate system for a three-dimensional space, let the sphere S be represented by the equation:

(x - a)^2 + (y - b)^2 + (z - c)^2 = r^2

where (a, b, c) are the coordinates of the center of the sphere, and r is the radius.

Let the plane P be represented by the equation:

Ax + By + Cz + D = 0

where (A, B, C) is the normal vector to the plane.

Since the line d is parallel to P and passes through the origin, it can be represented by the equation:

lx + my + nz = 0

where (l, m, n) is a vector parallel to the plane P.

To find the intersection points of the sphere S and the line d, we can substitute the equation of the line into the equation of the sphere, which gives us a quadratic equation in t:

(lt - a)^2 + (mt - b)^2 + (nt - c)^2 = r^2

Expanding this equation and collecting terms, we get:

(l^2 + m^2 + n^2) t^2 - 2(al + bm + cn) t + (a^2 + b^2 + c^2 - r^2) = 0

Since the line d passes through the origin, we have:

l(0 - a) + m(0 - b) + n(0 - c) = 0

which simplifies to:

al + bm + cn = 0

Therefore, the quadratic equation reduces to:

(l^2 + m^2 + n^2) t^2 + (a^2 + b^2 + c^2 - r^2) = 0

This equation has two solutions for t, which correspond to the two intersection points of the line d and the sphere S:

t1 = -(a^2 + b^2 + c^2 - r^2) / (l^2 + m^2 + n^2)

t2 = -t1

The coordinates of the intersection points can be obtained by substituting these values of t into the equation of the line d:

A = lt1, B = mt1, C = nt1

and

D = lt2, E = mt2, F = nt2

To find the distance between A and B, we can use the distance formula:

AB = sqrt((A - D)^2 + (B - E)^2 + (C - F)^2)

To maximize this distance, we can differentiate the distance formula with respect to t1 and set the derivative equal to zero:

d/dt1 (AB)^2 = 2(A - D)l + 2(B - E)m + 2(C - F)n = 0

This equation represents the condition that the direction vector (A - D, B - E, C - F) is orthogonal to the line d. Therefore, the vector (A - D, B - E, C - F) is parallel to the normal vector (l, m, n) of the plane P.

Using this condition, we can find the values of t1 and t2 that correspond to the maximum distance AB. Then we can substitute these values into the distance formula to find the maximum length of AB.

i have 4 vertices and 4 sides. two of my sides are parallel and the other two are not parallel. what shape am i

Answers

Answer:

Parallelogram

Step-by-step explanation:

is a polygon that has exactly four sides. (This also means that a quadrilateral has exactly four vertices, and exactly four angles.)

Differentiating pooled variance and the estimated standard error of the difference in sample means.
a. True
b. False

Answers

True. Pooled variance is the weighted average of the variances of two or more groups or samples, and it is used in calculating the estimated standard error of the difference in sample means.

The estimated standard error of the difference in sample means, on the other hand, is a measure of the variability of the differences between two sample means, and it takes into account the sample sizes and variances of the two groups being compared. Therefore, these two terms are related, but they represent different concepts in statistics.
The difference between pooled variance and the estimated standard error of the difference in sample means lies in their purpose and calculation. Pooled variance is a weighted average of the variances from two or more independent samples, while the estimated standard error of the difference in sample means measures the variability of the difference between the means of two samples.

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For the following function, determine the constant c so that f(x,y) satisfies the conditions of being a joint pmf (probability mass function) for two discrete random variables X and Y.f(x,y)=c(x+2y)Sx=(1,2)Sy=(1,2,3)

Answers

The constant c that makes f(x,y) a joint pmf for X and Y is c = 1/18.

For f(x,y) to be a joint pmf, it must satisfy the following two conditions:

The sum of f(x,y) over all possible values of x and y must be equal to 1.

f(x,y) must be non-negative for all possible values of x and y.

Let's first find the value of c that satisfies condition 2:

Since Sx=(1,2) and Sy=(1,2,3), the possible values of (x,y) are:

(1,1), (1,2), (1,3), (2,1), (2,2), (2,3)

We need to ensure that f(x,y) is non-negative for all of these possible values. This means that:

c(x+2y) ≥ 0

Since x and y are both non-negative integers, the expression inside the parentheses can never be negative. Therefore, we just need to make sure that c is non-negative. If c is negative, then f(x,y) will be negative for some values of x and y, which violates condition 2.

Now let's find the value of c that satisfies condition 1:

We need to find the sum of f(x,y) over all possible values of x and y, and set it equal to 1:

ΣΣ f(x,y) = 1

Σx=1,2 Σy=1,2,3 c(x+2y) = 1

cΣx=1,2 Σy=1,2,3 (x+2y) = 1

c(1+2+3+2+4+6) = 1

c(18) = 1

c = 1/18

Therefore, the constant c that makes f(x,y) a joint pmf for X and Y is c = 1/18.

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\dfrac{ 3x-1 }{ 4 } - \dfrac{ 2x+3 }{ 5 } = \dfrac{ 1-x }{ 10 }

Answers

Answer: x = 19/9.

Step-by-step explanation:


Miriam’s popcorn container was also 11. 5 inches high but with a base whoes side length is 2. 25 inches. The volume of Miriam’s container is





Answers

The volume of Miriam's container is approximately 58.22 cubic inches

What is the volume of the Miriam’s container?

A square prism is simply a three-dimensional solid shape which has six faces that are rectangles.

The volume of a square prism is expressed as;

V = l × l × h

Where l is the side length, h is height.

We know that the height of the container is 11.5 inches.

We also know that the side length of the base is 2.25 inches, which means that the length and width of the base are also 2.25 inches.

Therefore, we can plug in the values into the formula and get:

V = 2.25 × 2.25 × 11.5

V = 58.22 cubic inches

Therefore, the volume is approximately 58.22 in³.

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Consider a set of six classes, each meeting regularly once a week on a particular day of the week. Choose the statement that best explains why there must be at least two classes that meet on the same day. assuming that no classes are held on weekends: a. The pigeonhole principle shows that in any set of six classes there must be more than two classes that meet on the same day because there are only five weekdays for each class to meet on. b. The pigeonhole principle shows that in any set of six classes there must be at least two classes that meet on the same day because there are only five weekdays for each class to c. The pigeonhole principle shows that in any set of six classes there must be exactly two classes that meet on the same day because there are only five weekdays for each class to d. The pigeonhole principle shows that in any set of six classes there must be at least two classes that meet on the same day because there are more than two classes in total meet on meet on.

Answers

The pigeonhole principle shows that in any set of six classes, there must be at least two classes that meet on the same day because there are only five weekdays for each class to meet on.

This principle states that if there are more items than the number of spaces available to place them in, at least two items must occupy the same space. In this case, there are six classes and only five weekdays available for each class to meet on. Therefore, at least two classes must meet on the same day.

Correct answer: b. The pigeonhole principle shows that in any set of six classes, there must be at least two classes that meet on the same day because there are only five weekdays for each class to meet on.

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A random sample of 100 customers at a local ice cream shop were asked what their favorite topping was. The following data was collected from the customers.


Topping Sprinkles Nuts Hot Fudge Chocolate Chips
Number of Customers 12 17 44 27


Which of the following graphs correctly displays the data?
a bar graph titled favorite topping with the x axis labeled topping and the y axis labeled number of customers, with the first bar labeled sprinkles going to a value of 17, the second bar labeled nuts going to a value of 12, the third bar labeled hot fudge going to a value of 27, and the fourth bar labeled chocolate chips going to a value of 44
a bar graph titled favorite topping with the x axis labeled topping and the y axis labeled number of customers, with the first bar labeled nuts going to a value of 17, the second bar labeled sprinkles going to a value of 12, the third bar labeled chocolate chips going to a value of 27, and the fourth bar labeled hot fudge going to a value of 44
a histogram titled favorite topping with the x axis labeled topping and the y axis labeled number of customers, with the first bar labeled sprinkles going to a value of 17, the second bar labeled nuts going to a value of 12, the third bar labeled hot fudge going to a value of 27 ,and the fourth bar labeled chocolate chips going to a value of 44
a histogram titled favorite topping with the x axis labeled topping and the y axis labeled number of customers, with the first bar labeled nuts going to a value of 17, the second bar labeled sprinkles going to a value of 12, the third bar labeled chocolate chips going to a value of 27, and the fourth bar labeled hot fudge going to a value of 44

Answers

The correct answer is A because this represents discrete categories - ice cream toppings specifically, and not continuous numerical data

How to solve

The provided data showcases the popular toppings among a random selection of customers and their respective frequency counts.

As this represents discrete categories - ice cream toppings specifically, and not continuous numerical data – it merits presentation via a bar graph which makes a suitable choice for accurate representation.

In contrast, using a histogram is inappropriate in this instance as histograms are intended to exhibit the distribution of frequency for continuous data points.

The relevant chart, Option A displays information using a precisely labeled x-axis ("Topping") along with a y-axis (“Number of Customers”) showcasing labeled bars, each accounting for exact values regarding topping popularity:

Sprinkles: 17Nuts: 12Hot Fudge: 27Chocolate Chips: 44

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PLEASE HELP I INCLUDED THE PROBLEM IN IMAGE I WROTE IT DOWN!!!

Answers

The solution for the inequality expression g/20 ≤ 5 is derived to be g ≤ 100, which makes option B correct.

What are inequality signs

Inequality signs are mathematical symbols used to indicate that one quantity is greater than, less than, or equal to another quantity. These inequality signs includes:

Less than: <

Greater than: >

Less than or equal to: ≤

Greater than or equal to: ≥

These symbols are used in mathematical expressions and equations to compare values and express relationships between them.

Solving for the solution of the expression g/20 ≤ 5 as follows:

multiply both side of the inequality by 20

20 × g/20 ≤ 5 × 20

g ≤ 5 × 20 {20 will cancel out at the left hand side}.

g ≤ 100.

Therefore, the solution for the inequality expression g/20 ≤ 5 is derived to be g ≤ 100.

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4. consider the following time series (use excel for this problem). t 1 2 3 4 5 6 7 8 9 10 yt 120 110 100 96 94 92 88 84 82 78 a) construct a time series plot. what type of pattern exists in the data? b) develop the linear trend equation. what are the values for slope and intercept? c) what is the forecast for t

Answers

The forecast for t=11 is 90.76.

a) To construct a time series plot in Excel, you can follow these steps:

Enter the time period (t) in column A, starting from cell A2 and continuing down to A11.

Enter the corresponding values of the time series (yt) in column B, starting from cell B2 and continuing down to B11.

Select the range of cells containing the time period and the time series values (A1:B11).

Click on the "Insert" tab in the Excel ribbon.

Click on the "Line" chart type and select the first option (2-D Line).

Your time series plot should now appear on the worksheet.

Based on the plot, it appears that there is a downward linear trend in the data.

b) To develop the linear trend equation, we can use Excel's LINEST function. Follow these steps:

In cell D2, enter the formula "=LINEST(B2:B11,A2:A11)"

Press CTRL+SHIFT+ENTER to enter the formula as an array formula. The slope and intercept values should appear in cells D2 and D3, respectively.

The linear trend equation is: yt = -3.04t + 123.6

The slope is -3.04 and the intercept is 123.6.

c) To find the forecast for t=11, we can use the linear trend equation and substitute t=11.

Therefore, yt = -3.04(11) + 123.6 = 90.76.

So the forecast for t=11 is 90.76.

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Explain why it is necessary to check whether the population is approximately normal before constructing a confidence interval.

Answers

Checking for approximate normality in the population is essential for constructing a valid confidence interval, particularly when dealing with small sample sizes. This ensures the accuracy and reliability of the interval in estimating the true population parameter.

It's important to check whether the population is approximately normal before constructing a confidence interval because the accuracy and validity of the interval depend on the underlying distribution of the population. Here's a step-by-step explanation:

1. A confidence interval is a range of values within which the true population parameter (e.g., mean or proportion) is likely to fall, with a certain level of confidence (e.g., 95% or 99%).

2. The process of constructing a confidence interval relies on the Central Limit Theorem, which states that, for large sample sizes, the sampling distribution of the sample mean will be approximately normal, regardless of the population distribution.

3. However, for small sample sizes, the distribution of the population needs to be approximately normal in order to obtain an accurate confidence interval. This is because the normality assumption is crucial for the proper interpretation of the interval.

4. If the population is not approximately normal, the confidence interval may not provide a reliable estimate of the true population parameter, leading to incorrect conclusions and potentially invalid results.

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A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 2.8 ft/s. (a) How rapidly is the area enclosed by the ripple increasing when the radius is 3 feet?

Answers

The area enclosed by the ripple is increasing at a rate of  39.2π ft²/s when the radius is 3 feet. To solve this problem, we need to use the formula for the area of a circle: A = πr^2.



We know that the radius is increasing at a constant rate of 2.8 ft/s, so we can write r = 3 + 2.8t, where t is the time elapsed since the stone was dropped.

We want to find how rapidly the area enclosed by the ripple is increasing, which is the same as finding the derivative of the area with respect to time:

dA/dt = d/dt(πr^2)

Using the chain rule, we can simplify this to:

dA/dt = 2πr(dr/dt)

Now we can substitute in the expression we have for r:

dA/dt = 2π(3 + 2.8t)(2.8)

When the radius is 3 feet, we have:

dA/dt = 2π(3 + 2.8t)(2.8)

dA/dt = 39.2π ft^2/s

So the area enclosed by the ripple is increasing at a rate of 39.2π square feet per second when the radius is 3 feet.

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