Answer
27
Work Step by Step
According to the negative exponent rule, $a^{-n}=\frac{1}{a^{n}}$.
Therefore, $\frac{1}{3^{-3}}=\frac{1}{\frac{1}{3^{3}}}=1\div\frac{1}{3^{3}}=1\times3^{3}=1\times27=27$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.