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Thepotemich [5.8K]

2 years ago

6

Fine the average of these numbers, 8,12,13,15

2 answers:

GarryVolchara [31]2 years ago

8 0

Answer:

12

Step-by-step explanation:

The average is calculated as

average = $\frac{sum}{count}$ = $\frac{8+12+13+15}{4}$ = $\frac{48}{4}$ = 12

V125BC [204]2 years ago

6 0

Answer:

The average is 12

Step-by-step explanation:

When finding the average of a group of numbers, all you have to do is add all the numbers together and divide by the amount of numbers that you added by. 8 + 12 + 13 + 15 = 48. 48 ÷ 4 = 12

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The Big Telescope Company sells circular mirrors. Their largest mirrors have radii of 5 meters and their smallest mirrors have r

pogonyaev

Answer: 1:5

Step-by-step explanation:

Given: The cost of every mirror is proportional to the cube of the mirror's radius.

i.e. $\dfrac{\text{Cost of smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{(\text{radii of smallest mirror}^3)}{\text{(radii of largest mirror)}^3}$

Their largest mirrors have radii of 5 meters and their smallest mirrors have radii of 1 meter.

Then,

$\dfrac{\text{Cost of smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{1^3}{(5)^3}=\dfrac{1}{125}$

The ratio of the total cost of 25 of the company's smallest mirrors to the cost of one of the company's largest mirrors will be:

$\dfrac{\text{Cost of 25 smallest mirror}}{\text{Cost of largest mirror}}=\dfrac{25\times 1}{125}=\dfrac{1}{5}$

Hence, the ratio of the total cost of 25 of the company's smallest mirrors to the cost of one of the company's largest mirrors = 1:5 .

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2 years ago

Two rectangles are similar. If the height of the first rectangle is 3 inches, and the height of the second rectangle is 9 inches

Dovator [93]

It is 3X as long
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3 years ago

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How do you Factor 6y^2-5y-21

Katarina [22]

Answer:

(2y+3) (3y-7)

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Ramon is graphing the function f(x) = 3(4)x. He begins by plotting the initial value. Which graph represents his initial step?

Montano1993 [528]

Answer:

The graph of his initial step in the attached figure

Step-by-step explanation:

we have

$f(x)=3(4)^{x}$

This is a exponential function of the form

$y=a(b)^{x}$

where

a is the initial value

b is the base

r is the rate of change

In this problem

a=3 ---> the initial value ( value of the function when the value of x is equal to zero)

b=4

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therefore

The initial value is the point (0,3)

The graph of his initial step in the attached figure

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3 years ago

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