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Vitek1552 [10]
3 years ago
8

We _____ when calculating the average deviation, because the sum of all deviation scores around the mean equals zero.

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
6 0
Subtract because it has to deal with the many signs
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Find area and round to nearest thousandth
vesna_86 [32]

Answer:

236.715 ft²

Step-by-step explanation:

The figure consists of the rectangle with sides 15 ft and 4 ft and two semicircles with diameter 15 ft (radius 7.5 ft).

The area of the rectangle is

A₁=15·4=60 ft²

The area of two semicircles together is the area of circle. Thus,

A₂=πr²=π·7.5²=56.25π≈176.715 ft²

The area of the figure is

A=A₁+A₂=60+176.715=236.715 ft²

3 0
4 years ago
PLEASE ANSWER QUICKLY! <br> Simplify –7(x + 10) + 9(x – 4)
mr_godi [17]

Answer:

2x-106

Step-by-step explanation:

-7(x+10)+9(x-4)

Expand parentheses:

-7x-70+9x-36

Combine like terms:

2x-106

Hope this helps!

3 0
3 years ago
Read 2 more answers
Nancy has 2 more than twice the number of homework problems April has. Nancy has 20 homework problems. In the equation below, p
Nat2105 [25]

Answer: 9

Step-by-step explanation:

Since p is the number of homework problems April has. Since Nancy has 2 more than twice the number of homework problems April has and has 20 homework problems, this can be expressed into an equation as:

(2 × p) + 2 = 20

2p + 2 = 20

2p = 20 - 2

2p = 18

p = 18/2

p = 9

April has 9 homeworks, therefore p is 9.

3 0
3 years ago
Does anyone know how to do this please?!
Serga [27]
The area is 28 in !!!!!!!!!!!
5 0
3 years ago
How do you use the vertical line test?
Triss [41]
First let you know what to do. OK. Going to drag a ruler. Across the paper. Vertically. And if it touches 2 points on the grid. Then it fails the test.
5 0
4 years ago
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