SOMEONE HELP AND ANSWER THIS FOR BRAINLIST IF CORRECT
The line plot displays the cost of used books in dollars.

A horizontal line starting at 1 with tick marks every one unit up to 9. The line is labeled Cost in Dollars, and the graph is titled Cost of Used Books. There is one dot above 2, 4, 8, and 9.There are two dots above 6 and 7. There are three dots above 3.

Which measure of center is most appropriate to represent the data in the graph, and why?

The mean is the best measure of center because there are no outliers present.
The mean is the best measure of center because there are outliers present.
The median is the best measure of center because there are no outliers present.
The median is the best measure of center because there are outliers present.

Answer:

y=-1/5x

Step-by-step explanation:

y=-5x

x=-5y

y=x/-5

y=-1/5x

Answer: -2, 2

Step-by-step explanation:

The derivative of a function, f(x), at a point where f(x) has a sharp turn (or cusp) does not exist.

The derivative of a function, f(x), at a point where f(x) has a vertical tangent line does not exist.

Using this information, we can see that f(x) is not differentiable when x=3 since there is a vertical tangent line. We can also see that f(x) is not differentiable when x=-1 since there is a cusp.

Based on the given options, the statement that best describes the regression cannot be determined without additional information.

The options do not provide any details about the regression coefficients, R-squared value, or p-values, which are necessary to make a meaningful statement about the regression. It is not possible to determine the quality of the predictions or the significance of the regression based solely on the dependent variable and sample size.
Your answer: B) Statistically significant and quite small MPG prediction errors

This option best describes a regression with a strong relationship between the independent variable (e.g., car characteristics) and the dependent variable (highway miles per gallon). The statement suggests that the model is statistically significant, meaning it can reliably predict MPG, and the prediction errors are small, indicating good accuracy in the predictions.

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The ratios of (a) square kens to square meters (1 ken² / 1 m²) is 3.88

For given question,

We have been given the unit conversion.

A traditional unit of length in Japan is the ken

and 1 ken = 1.97 m

We need to find the the ratios of (a) square kens to square meters.

First we find the square of 1 ken.

⇒ 1 square kens = (1.97 m)²

⇒ 1 square kens = 1.97 × 1.97 m²

⇒ 1 square kens = 3.88 m²                  ..................(1)

And 1 square meters = 1 m²                 ................. (2)

Now we take the ratio of square kens to square meters.

From (1) and (2),

⇒ 1 ken² / 1 m² = 3.88 / 1

⇒ 1 ken² / 1 m² = 3.88

Therefore, the ratios of (a) square kens to square meters (1 ken² / 1 m²) is 3.88

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Answer: 3y is the coefficient.

Step-by-step explanation: A coefficient is numerical or constant quantity placed before and multiplying the variable in an algebraic expression. Or, to put it simpler, a coefficient is a number with an variable next to it.

Answer:

11.9 miles

Step-by-step explanation:

16 - 4.1 = 11.9

The population means may be the same

So, option D is correct.

What is meant by confidence interval?

In statistics, the probability that a population parameter will fall between a set of values a predefined percentage of the time is known as the confidence interval. Analysts typically use confidence intervals that cover 95% or 99% of the expected observations while assessing data. In frequentist statistics, an estimation range for an unknown parameter is referred to as a confidence interval. The most common confidence level for computing confidence intervals is 95%, however other levels, such 90% or 99%, are also occasionally employed. The conclusion is reached that the result is statistically significant if the confidence interval eliminates the value of zero effect.

If (μ₁- μ₂=0) is included in the confidence interval, that means this two means have the same difference that is zero.

Therefore, they may be nearly same,

So, The population means may be the same

Hence, option D is correct.

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The distance when the mass is 5kg is 15cm.

When two values vary directly, it means that both values move in the same direction. If one of the value increases, the other value increases and if one of the values decreases, the other value decreases.

The equation that is used to represent direct variation is:

d = km

Where:

The first step is to determine the value of k:

12 = 4k

k = 12 / 4

k = 3

d = 3 x 5 = 15cm

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Step-by-step explanation:

By Law of Indices, a^m / a^n = a^(m-n).

Therefore a² / a⁸ = a^(-6).

x = -6.

Given the functions

since

then

Correct answer

Option C

Given the relation, value of  −r2 is {(3, 1), (3, 3), (2, 3), (1, 4)}.

To find −r2, we first need to find r2, which is the composition of the relation r with itself. The composition of r with itself is given by:

r2 = {(a, c) | ∃b ∈ A, (a, b) ∈ r and (b, c) ∈ r}

where A is the set of all elements in the relation r.

Using this definition, we can calculate r2 as follows:

r2 = {(1, 3), (3, 3), (3, 2), (4, 1)}

Next, to find −r2, we simply take the inverse of each ordered pair in r2 and reverse the order of the pairs. Thus, we have:

−r2 = {(3, 1), (3, 3), (2, 3), (1, 4)}

Therefore, the relation −r2 is {(3, 1), (3, 3), (2, 3), (1, 4)}.

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Answer: 1. hypothesis: line is horizontal

Conclusion: has a slope of 0

2. If a line is vertical, then it has an undefined slope.

Hypothesis : line is vertical

Conclusion: has undefined slope.

Step-by-step explanation:

The rate of decrease of volume of the sphere when its diameter is 6 cm is -96π cubic cm/min.

Given that the snowball is a sphere, we can use the formula for the volume of a sphere.

The formula for the volume of a sphere is

V = 4/3 πr³

We need to find out the rate of decrease of volume when the diameter is 6 cm.

To find the rate of decrease of volume, we need to differentiate the above formula. Differentiating the above formula w.r.t. time, we get

dV/dt = 4/3 π(3r²)(dr/dt)

Where r is the radius of the sphere and dr/dt is the rate of change of the radius.

Let d be the diameter of the sphere. Then we can write,r = d/2

Also, given that dr/dt = -2cm/min

Substituting the values in the equation for the rate of decrease of volume,

dV/dt = 4/3 π(3(d/2)²)(-2) = -8π/3 d²

As the diameter of the sphere is 6 cm, d = 6 cm.Substituting the value in the equation above, we get

dV/dt = -8π/3 (6)² = -96π cubic cm/min

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Answer:

494 cm^2

Step-by-step explanation:

Find area od the rectangle:

14 x 26 = 364

Find area of the triangle:

10 x 26 = 260

260/2 = 130

Add the areas together:

364 + 130 = 494

Answer:

188.5\(cm^2\)

Step-by-step explanation:

The surface area of a cylinder can be found using the equation: \(A=2\pi rh+2\pi r2\).

When we plug in to this equation we get \(2\pi (3)(7) + 2\pi(3^2)\) which equals 188.4955 which can be rounded up to 188.5\(cm^2\)

The Least common factor and greatest common factors of 10 and 12 is 60 and 2 respectively. The difference between the LCM and GCF is 58

The first number = 10

The second number = 12

Prime factorization of each number

10 = 2 × 5

12 = 2×2×3

The LCM of 10 and 12 = 2 × 2 × 3 × 5

=60

The GCF of 10 and 12 = 2

The difference between the LCM and GCF of 10 and 12 = The LCM of 10 and 12 - The GCF of 10 and 12

= 60 - 2

= 58

Hence, the Least common factor and greatest common factors of 10 and 12 is 60 and 2 respectively. The difference between the LCM and GCF is 58

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Answer:  The two angles add up to 180 so they are supplementary angles.  

The sum of their measures is 180 degrees.

Step-by-step explanation:

Plug in given value for x.  

x=20

(3x+50)=

(60+50)=110

110

(4x-10)=

80-10=70

70

There are several true things about these angles you can find from this information but I think you are looking for the answer at top.

Answer:

18

Step-by-step explanation:

24 - (3 * 2)

Answer:

the answer will be D because it looks like it would be d

Answer: The first one

Step-by-step explanation:

To construct the frequency distribution diagram for the given shaft diameters, we can first list the unique values in ascending order along with their frequencies:

Diameter Frequency

2.50 2

2.51 2

2.52 3

2.53 2

2.54 3

2.55 1

5.51 2

5.52 4

5.53 1

5.54 1

5.55 1

5.56 1

The diagram can be represented as:

Diameter | Frequency

2.50-2.51 | 4

2.52-2.53 | 5

2.54-2.55 | 4

5.51-5.52 | 6

5.53-5.54 | 2

5.55-5.56 | 2

This frequency distribution diagram provides a visual representation of the frequency of each diameter range in the data set.

In-process monitoring of surface finish refers to the methods used to assess and control the quality of a surface during the manufacturing process. There are several different methods of in-process monitoring of surface finish:

Surface Roughness Measurement: This method involves measuring the roughness of the surface using instruments such as profilometers or roughness testers. The roughness parameters provide quantitative measurements of the surface texture.

Visual Inspection: Visual inspection is a subjective method where trained inspectors visually examine the surface for any imperfections, such as scratches, cracks, or unevenness. This method is often used in conjunction with other measurement techniques.

Non-contact Optical Measurement: Optical techniques, such as laser scanning or interferometry, are used to measure the surface profile without physical contact. These methods provide high-resolution measurements and are suitable for delicate or sensitive surfaces.

Contact Measurement: Contact-based methods involve using instruments with a stylus or probe that physically touches the surface to measure parameters like roughness, waviness, or flatness. Examples include stylus profilometers and coordinate measuring machines (CMMs).

In-line Sensors: In some manufacturing processes, in-line sensors are integrated into the production line to continuously monitor surface finish. These sensors can provide real-time data and trigger alarms or adjustments if the surface quality deviates from the desired specifications.

The choice of method depends on factors such as the desired level of accuracy, the nature of the surface being monitored, the manufacturing process, and the available resources. Using a combination of these methods can provide comprehensive monitoring of surface finish during production.

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Answer:

4.8

Step-by-step explanation:

because if 2 can't go into 3 time than what

The statement "A firm that has positive accounting profit does not necessarily have positive economic profit" is true because economic costs will be greater than accounting costs if implicit costs exist.

Lets discuss why is it true?

A positive accounting profit occurs when a company's net income exceeds its expenses, including depreciation and other non-cash costs. The difference between sales income and total costs, including both explicit and implicit costs, is referred to as accounting profit.

An economic profit is a business's overall income minus its implicit and explicit expenses.

Explicit costs are expenditures that a company pays out of pocket, such as the expense of materials, utilities, salaries, and rent. Implicit costs are expenses that aren't as obvious but nevertheless play a role in a company's decision-making.

The statement is true because even if a company earns a positive accounting profit, it may be less than its economic costs.

As a result, even though a company's accounting profits may be greater than zero, its economic profits may be negative (less than zero) if the total economic costs exceed the total revenue generated.

In conclusion, the statement is true because economic costs will be greater than accounting costs if implicit costs exist.

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Answer:

a) linked a screenshot of the graph.

b) when y=1 x=.5

Step-by-step explanation:

4 is the slope, which makes the graph angle different. Starting at the origin (0,0) if you go over 1 and up 4 that is how you can draw the slope on a graph.

-1 makes the line go to the right 1 time so instead of the graph being on the origin (0,0) it will be placed on the coordinate points of (1,0)

To find the x value. Find 1 on the y-axis of the line graph. Go to the right to find where the line intersects. After you find that go straight down to find the x-value (0.5)

Suppose 's' be a collection of 'n' plane segments. It is true to say that a transversal as well as stabber for 's' is a line that crosses every segment of 's'.

A transversal in geometry is a line, ray, as well as line segment that, on a plane, overlaps other lines, rays, including line segments at various locations.

Thus, if 's' be a collection of n plane segments. It is true to say that a transversal as well as stabber for 's' is a line that crosses every segment of s.

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The car's altitude remains constant at 50 meters beyond 100 meters, option C is the correct answer: C. As the car travels its altitude increases, but then it reaches a plateau and its altitude stays the same.

The piecewise equation given is:

a = {0.5x if d < 100, 50 if d ≥ 100}

To describe the change in altitude of the car as it travels from the starting point to about 200 meters away, we need to consider the different regions based on the distance (d) from the starting point.

For 0 < d < 100 meters, the car's altitude increases linearly with a rate of 0.5 meters per meter of distance traveled. This means that the car's altitude keeps increasing as it travels within this range.

However, when d reaches or exceeds 100 meters, the car's altitude becomes constant at 50 meters. Therefore, the car reaches a plateau where its altitude remains the same.

Since the car's altitude remains constant at 50 meters beyond 100 meters, option C is the correct answer:

C. As the car travels its altitude increases, but then it reaches a plateau and its altitude stays the same.

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Complete question is below

The change in altitude (a) of a car as it drives up a hill is described by the following piecewise equation, where d is the distance in meters from the starting point. a { 0 . 5 x if d < 100 50 if d ≥ 100

Describe the change in altitude of the car as it travels from the starting point to about 200 meters away.

A. As the car travels its altitude keeps increasing.

B. The car's altitude increases until it reaches an altitude of 100 meters.

C. As the car travels its altitude increases, but then it reaches a plateau and its altitude stays the same.

D. The altitude change is more than 200 meters.

Answer:

No

Yes

No

Yes

Step-by-step explanation:

In the first 1, the input 2 repeats which makes it not a function

in the second one each input is unique and does not repeat so it is a function

in the third one the input 1 repeats and makes it not repeat

And in the last one each input is unique

If inputs (the x value) repeat it's not a function

x^2=37 ===》 x = + radical 37( acceptable )

===》 x = - radical 37(unacceptable)

To find the fastest ride possible, we need to consider the maximum slope constraint and the harness constraint. The maximum slope constraint is usually around 30 degrees for safety reasons. Therefore, we need to choose an ending height that satisfies this constraint while also ensuring the ride is as fast as possible.

We know that the cable starts at a height of 16 feet above the ground, so the ending height should be higher than this to ensure a downhill slope. Let's assume an ending height of 80 feet.

Using the formula for the slope of a line, which is slope = (ending height - starting height) / cable length, we can solve for the slope. The cable length is the distance between the starting and ending points, which we can assume to be 500 feet.

So, slope = (80 - 16) / 500 = 0.128.

Therefore, the ending height is 80 feet and the slope is 0.128. This slope should give us the fastest ride possible while also ensuring safety constraints are met.

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Answer:

I hope that it will be help full for u

Step-by-step explanation:

As we know the equation of line is ,

As given

slope=m=-2/5

also given (x, y)= (-5, 7)

we get   x=-5  , y=7

putt in the equation of line all these values we get ,

7=(-2/5)(-5) +c

c=7-2

c=5   now putt the value of c and m  in equation of line we will get ,required equation of line

Using slope intercept form, the equation of the line that passes through the point (-5,7) and has a slope of -2/5 is y = - 2/5x + 5.

The equation of the "straight line is in the form y = mx + b where 'm' is the slope of the line, 'b' is the y - intercept form" is called slope intercept form.

According to the question,

The line passes through the point (-5,7) and has slope of -2/5,

The equation of the straight line y = m x + c. Substitute (-5,7) and slope -2/5 in general equation we have 7 = -2/5 (-5) + c

7 = 2 + c

c = 7-2

c = 5

Hence, using slope intercept form, the equation of the line that passes through the point (-5,7) and has a slope of -2/5 is y = - 2/5x + 5.

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According to the question, the total number of handshakes among the 2626 people is 1,731,712.

To calculate the number of handshakes among the 2626 people, we need to consider that each man shakes hands with everyone except his spouse, and there are 1313 married couples in attendance.

Since there are 1313 married couples, there are also 1313 men and 1313 women. Each man shakes hands with all the women except his spouse, resulting in (1313 - 1) handshakes for each man. Therefore, the total number of handshakes involving men is 1312 handshakes.

Since no handshakes took place between women, we only need to calculate the number of handshakes involving men and women. Each of the 1313 men shakes hands with all the 1313 women, resulting in 1313 * 1313 handshakes.

Now we can calculate the total number of handshakes by adding the handshakes involving men (1312 handshakes) and the handshakes involving men and women (1313 * 1313 handshakes):

Total number of handshakes = 1312 + (1313 * 1313)

= 1,731,712

Hence, the total number of handshakes among the 2626 people is 1,731,712.

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