Question

3
Rewrite the following without an exponent.
9-2

Answer 1

Answer:

7

Step-by-step explanation:

9-2

Answer 2

Answer:

$\frac{1}{81}$

Step-by-step explanation:

Assuming you mean: $9^{-2}$

$9^{-2}\\\\a^{-b}=\frac{1}{a^b}\\\\ 9^{-2}=\frac{1}{9^2}=\boxed{\frac{1}{81}}$

Hope this helps.