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irinina [24]
3 years ago
11

Simplify (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Mathematics
2 answers:
Bumek [7]3 years ago
8 0

Answer:

B.) -1/8

Step-by-step explanation:

You flip the problem because of the negative exponent

\frac{1}{-2^3}

This makes the exponent positive

Expand the denominator

(-2) * (-2) * (-2) = 4*(-2) = -8

1/-8 = -1/8

dusya [7]3 years ago
7 0

Answer:

Its D because 2×2×2 equals 8 and they are both minus and knowing - times - makes + so it becomes 8

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True [87]

Given:

Compound shape

To find:

The area of the compound shape.

Solution:

The compound shape is splitted into two parallelograms.

<u>Bottom parallelogram:</u>

Base = 7.5 cm

Height = 5 cm

Area of the parallelogram = base × height

                                           = 7.5 × 5

                                           = 37.5 cm²

The area of the Bottom parallelogram 37.5 cm².

<u>Top parallelogram:</u>

Base = 7.5 cm

Height = 4.5 cm

Area of the parallelogram = base × height

                                           = 7.5 × 4.5

                                           = 33.75 cm²

The area of the top parallelogram 33.75 cm².

Compound shape = 37.5 + 33.75

                               = 71.25 cm²

The area of the compound shape is 71.25 cm².

7 0
3 years ago
Find the average range. Round the mean and the average range to the nearest tenth. (Show all your work on scratch paper, then en
NISA [10]
3, 12, 15, 25, 30, 40The range is the difference between the greatest and smallest values:
range = 40 - 3 = 37

Thee average is the sum of elements divided by the number of elements:
average = (<span>3 + 12 + 15 + 25 + 30 + 40</span>)/6
average = 125/6 = 20.83
4 0
2 years ago
If a number is not a natural number then it is not a whole number
Alisiya [41]

Answer:

no

Step-by-step explanation:

a natural number has to be a whole number

4 0
2 years ago
What is 20 percent of 248
Dvinal [7]

Answer:

20% of 248 is 49.6

Step-by-step explanation:


5 0
2 years ago
Read 2 more answers
PLEASE HELP!! WILL MARK BRAINLIST ​
gayaneshka [121]

Answer:

3/50 7/50 40/50

Step-by-step explanation:

Ok. I'm not exactly a math wiz but I think you may be overthinking this. Experimental probability should be the probability from the experiment right. It's in the name. In chemistry if it's a well established value it's called a theoretical value or probability. So the answer should just be the probability from the said experiment. No other funky math terms are given here which clues me to the idea that it might just be this simple.

5 0
2 years ago
Read 2 more answers
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