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mylen [45]
3 years ago
11

Select the equivalent expression.

Mathematics
1 answer:
ANEK [815]3 years ago
5 0

Answer:

c

Step-by-step explanation:

\frac{1}{9^{2} }=1/81

9^{\frac{1}{2} } =3

\frac{1^{2} }{9}=\frac{1}{9}

9^{-2}=1/81

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