3 years ago

Solve the compound inequality:

Mathematics

1 answer:

Akimi4 [234]3 years ago

3 0

Answer:

20 > x > 10

Step-by-step explanation:

30 > x + 10 > 20

(take ten on each side to get x on its own and to get your final answer which is...)

20 > x + 10 > 10

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Answer:

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Step-by-step explanation:

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$\sigma^{2} =\frac{\Sigma(X- \mu)^{2}}{N} \\or \\ \sigma^{2} =\frac{\Sigma(X)^{2}}{N} -\mu^{2} \\$

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