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3 years ago

14

Question 2 (Essay Worth 10 points)

1 answer:

sashaice [31]3 years ago

5 0

Ryan is correct, the mean is about 8.1.

To find the mean, you have to add up all the values, then divide by the total amount.

For Sample A:
60 x 6 + 90 x 7 + 145 x 8 + 150 x 9 + 55 x 10 = 4050

If you add up all the adults, you have 500.

Dividing 4050 by 500 = 8.1

Sample B will produce a very similar result.

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If 7(x-7)=-15 then x =

soldi70 [24.7K]

7(x-7)=-15

distribute

7x-49 =-15

add 49 to each side

7x =34

divide by 7

x = 34/7

x = 4 6/7

6 0

2 years ago

A general contractor is constructing a building that requires a concrete foundation that is to be 20 feet by 12 feet and 4 inche

ikadub [295]

First we calculate the volume of the foundation:

Volume (V) = 20 ft * 12 ft * 4 in (1 ft / 12 in)

V = 80 ft^3

Since the cost is in cubic yard (yard^3) so convert:

V = 80 ft^3 * (1 yard^3 / 27 ft^3) = 2.963 yard^3

So the total cost is:

cost = ($125 / yard^3) * 2.963 yard^3

<span>cost = $370.37</span>

7 0

3 years ago

Read 2 more answers

7y + 4x + 4 - 2x + 8 what is the coefficient

Romashka [77]

7y 4x and 2x they all are paired with a variable

3 0

3 years ago

Rationalize the denominator and simplify.<img src="https://tex.z-dn.net/?f=15%20%5Csqrt%7B6%7D%2F3%20%5Csqrt%7B5%3Cbr%3E%0A" id=

Bumek [7]

(15√6 / √5)

<span>(15√6/√5) *(</span>√5/√5)

(15*√6*√5)/(√5*√5)

15*√30 / 5

3√30

3 0

3 years ago

PLEASE HELP!! NO LINKS!! GIVING 20 POINTS AWAY!!

shutvik [7]

Answer:

$m\angle N = 32\degree$

$m\widehat {NQ}=106\degree$

Step-by-step explanation:

By inscribed angle theorem:

$m\angle N = \frac{1}{2} \times m\widehat {MP}$

$m\angle N = \frac{1}{2} \times 64\degree$

$m\angle N = 32\degree$

Again by inscribed angle theorem:

$m\angle P= \frac{1}{2} \times m\widehat {NQ}$

$53\degree = \frac{1}{2} \times m\widehat {NQ}$

$2\times 53\degree = m\widehat {NQ}$

$m\widehat {NQ}=106\degree$

5 0

2 years ago