Answer:
[tex]\frac{1}{81}[/tex]
Step-by-step explanation:
Law of exponent
[tex]a^{-m} = \frac{1}{a^{m} }[/tex]
1) Applying the above rule, we have
[tex]9^{-2} = \frac{1}{9^{2} }[/tex]
= [tex]\frac{1}{9*9}[/tex]
= [tex]\frac{1}{81}[/tex]
