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3 years ago

What is the average of -30 -15 -20 55

Mathematics

2 answers:

defon3 years ago

8 0

Answer:

-2.5

Step-by-step explanation:

-30 + (-15) + (-20) + 55 = -10. Then you divide it by how many numbers there are (4). Which equals - 2.5. If this is wrong, then round up to -3.

IRINA_888 [86]3 years ago

6 0

Answer:

${ \tt{ = \frac{ (- 30) + ( - 15) + ( - 20) + 55}{4} }} \\ \\ = { \tt{ \frac{ - 10}{4} }} \\ \\ = { \tt{ - \frac{5}{2} }}$

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Answer:

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3 times (number squared) and sum with (-7)

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Answer:

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Step-by-step explanation:

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3 years ago

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nignag [31]

Answer:

1. 247 mg ÷ 10 = 24.7 cg

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Step-by-step explanation:

1. To convert from 'mg' to 'cg', you must divide by 10 because 'cg' consists of 10 mg.

2. To convert from 'mg' to 'dg', you must divide by 100 because 'dg' consists of 100 mg.

3. To convert from 'mg' to 'g', you must divide by 1000 because 'g' consists of 1000 mg.

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4 years ago

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GREYUIT [131]

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Step-by-step explanation:

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