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jek_recluse [69]
3 years ago
7

Perform the indicated operation.

Mathematics
2 answers:
bulgar [2K]3 years ago
8 0
-20. -100/5 is -20. You could have used a calculator to find this. 
Valentin [98]3 years ago
4 0
When dividing a fraction in which the top OR the bottom is negative, the answer is negative.  Next, just solve normally.  100/5=20
If you want to check, 20*5=100.
Remember to make the answer negative, so the answer is -20.<span />
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Answer:

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Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

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Z = \frac{X - \mu}{\sigma}

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In this problem, we have that:

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a) Find the z-score of John who scored 190

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Z = \frac{190 - 210}{25}

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b) Find the z-score of Bill who scored 270

Z = \frac{X - \mu}{\sigma}

Z = \frac{270 - 210}{25}

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c) If Mary had a score of 1.25, what was Mary’s score?

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