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3 years ago

Which of the following statements correctly explains the coefficient of variation (CV)?

Mathematics

1 answer:

Vitek1552 [10]3 years ago

3 0

Answer:

A. The CV is a relative measure of risk/return.

Step-by-step explanation:

The coefficient of variation of any investment, is used to measure and calculate the total risk of that investment with respect to its per unit expected return rate.

We can also define the coefficient of variation as a ratio of standard deviation to the expected value of an investment.

The answer is - A. The CV is a relative measure of risk/return.

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The native range of a species includes all areas in which it lives.

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Step-by-step explanation:

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3 years ago

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VikaD [51]

QUESTION 1

We want to find the slope through the points (12,-18), (11,12).

We use the slope formula,

$m = \frac{y_2-y_1} {x _2-x_1}$

We substitute the points to get,

$m = \frac{12 - - 18}{11 - 12}$

$m = \frac{30}{ - 1} = - 30$

The slope is -30.

QUESTION 2.

We want to find the slope through the points (-18, -20), (-18, -15).

We use the slope formula again to obtain,

$m = \frac{ - 15 - - 20}{ - 18 - - 18}$

We simplify to get;

$m = \frac{5}{0}$

Division by zero means the slope is not defined.

QUESTION 3

The given equation is 4x + y = 5.

At x-intercept, y=0.

We put y=0 into the equation to get,

$4x + 0 = 5$

$4x = 5$

$x = \frac{5}{4}$

The x-intercept is

$( \frac{5}{4} , 0)$

To find the y-intercept,we substitute x=0 into the equation to get,

$4(0) + y = 5$

$y = 5$

The y-intercept is (0,5)

QUESTION 4.

The given equation is

$y = 5x - 4$

To find the y-intercept put x=0 into the equation.

$y = 5(0) - 4$

$y = - 4$

(0,-4)

To find the x-intercept, put y=0,

$0 = 5x - 4$

$4 = 5x$

$\frac{4}{5} = x$

$( \frac{4}{5} ,0)$

QUESTION 5

To find the equation of a line given the slope m, and a point

$(x_1,y_1)$

we use the formula,

$y-y_1=m(x-x_1)$

The given line has slope zero and passes through

(3,4)

The equation is

$y - 4 = 0(x - 3)$

$y - 4 = 0$

$y = 4$

Question 6

The given equation is

$x = 1$

This is the equation of a line that is parallel to the y-axis.

The slope of all lines parallel to the x-axis is undefined.

The slope of x=1 is not defined.

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3 years ago

The van traveled 120 miles in 7 hours. How long would it take to travel 1400 miles at the same speed? (A) 5/3 hrs (B) 81 2/3 hrs

trapecia [35]

Answer:

$81\frac{2}{3}$ hours

Step-by-step explanation:

Hi there!

<u>1) Create a proportion</u>

The van traveled 120 miles in 7 hours
The van travels 1400 miles in x hours

$\frac{7h}{120mi}=\frac{x}{1400 mi}$

$\frac{7}{120}=\frac{x}{1400}$

<u>2) Solve for x</u>

$\frac{7}{120}=\frac{x}{1400}$

Multiply both sides by 1400

$\frac{7}{120}*1400=\frac{x}{1400}*1400$

$\frac{245}{3} =x$

$81\frac{2}{3} =x$

Therefore, it would take the van $81\frac{2}{3}$ hours to travel 1400 miles at the same speed.

I hope this helps!

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3 years ago

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sertanlavr [38]

Answer:

He could have bought 23 lilies by itself

Step-by-step explanation:

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