Question

Please help! will give medal.
Simplify

9^-2.5

a. 1/243
b. -22.5
c. -3.6
d. -45/18

Answer 1

\[9^{-2.5}\] Where, we make it into a ratio and make the (-) a positive

\[1/9^{2.5}\]

Answer 2

\(9^{-2.5}=9^{-2}9^{-\frac{1}{2}}=\frac{1}{9^2}*\frac{1}{\sqrt{9}}=\frac{1}{81*3}=?\)

Answer 3

9^-2.5=1/243

Answer 4

1/243?

Answer 5

Thanks, guys. :)

Answer 6

@zzr0ck3r Thanks for showing that. That is a much more efficient/correct way of doing it than I was about to do haha