Question

evaluate. write your answer as a fraction or whole number without exponents. 9^{-1} = square

Explanation:

Step1: Apply negative - exponent rule

The negative - exponent rule states that $a^{-n}=\frac{1}{a^{n}}$. For $9^{-1}$, where $a = 9$ and $n = 1$, we have $9^{-1}=\frac{1}{9^{1}}$.

Step2: Simplify the expression

Since $9^{1}=9$, then $\frac{1}{9^{1}}=\frac{1}{9}$.

Answer:

$\frac{1}{9}$