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Karo-lina-s [1.5K]
3 years ago
9

Simplify 12 - (-8)*4 = ? A. 20 B. 44 C. 80 D. 16

Mathematics
2 answers:
malfutka [58]3 years ago
6 0
12-
(-8)*4
12-(-32)= 12+32
44
kirza4 [7]3 years ago
4 0
You will do multiplication first and you will get -32 now you do 12 - (-32) and get 47
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The mean number of hours of part-time work per week for a sample of 526526 college students is 2828. If the margin of error for
sveta [45]

Answer:

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

Step-by-step explanation:

A confidence interval has the following format.

\mu_{x} \pm M

In which \mu_{x} is the mean of the sample and M is the margin of error.

In this problem, we have that:

\mu_{x} = 28, M = 2.2

\mu_{x} - M = 28 - 2.2 = 25.8

\mu_{x} + M = 28 + 2.2 = 30.2

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

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3 years ago
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Step-by-step explanation: Since we are talking about cubes, and you know the volume of a cube is lwh, we know l, w and h are all equal, meaning be can cube root the volume to find all side lengths. The cube root of 216 is 6, so if each side in cube B is 2 longer, then the lwh for B is 8*8*8, or 512. 512-216=296.

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4 years ago
Find the distance between A and B.
Goryan [66]

Answer: a. 34

Step-by-step explanation:

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3 years ago
4x + 8y = 20<br> -4x + 2y = -30 solve using elimination
Ahat [919]
(7,-1)
comment if u want me to explain the answer
8 0
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during summer vacation, you charge people $8 per hour for swimming lessons and a $20 registration fee. if you make $52 one day,
vitfil [10]
I think the answer would be "I spent 4 hours teaching lessons".

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3 years ago
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