3 years ago

Simplify (4/5)^-2 . Show your work!

Mathematics

1 answer:

jarptica [38.1K]3 years ago

5 0

Answer:

$\frac{25}{16}$

Step-by-step explanation:

Apply exponent rule: $x^{-y}=\frac{1}{x^y}$

$(\frac{4}{5}) ^{-2}=\frac{1}{\left(\frac{4}{5}\right)^2}=\frac{1}{\frac{16}{25}}=\frac{25}{16}$

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Answer:

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3 years ago

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Answer:

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Read 2 more answers

Find the values of a and b so that the solution of the linear system is (-9,1).

Diano4ka-milaya [45]

Answer:

Step-by-step explanation:

we can write -9 instead of x and y=1 instead of 1

so we write solution again

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6 0

3 years ago

"if the standard deviation of a group of 20 scores is 15, what is the variance?"

DerKrebs [107]

We have been given that the standard deviation of a group of 20 scores is 15 and we are asked to find variance.

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$\text{ Variance}=\sigma^{2}\\
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Therefore, our variance is 225.

7 0

3 years ago