Homework Help: Math

Posted by B.B. on Tuesday, April 20, 2010 at 8:42pm.

I am to express the following using a positive exponent. Then I have to simplify the expression. Do not evaluate.
9^-2.
Here is my answer:
9^-2=1/81.
Is this correct?
Thanks.

Math - Damon, Tuesday, April 20, 2010 at 8:42pm
yes

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