Question

Math

Posted 6 months ago

```
Select the equivalent expression.
$a^{-1}=?$
Choose 1 answer:
(A) $-a$
(B) $\sqrt{a}$
(C) $\frac{1}{a}$
```

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Answer from Sia

Posted 6 months ago

Solution by Steps

step 2

According to the rules of exponents, $a^{-1}$ is equivalent to $\frac{1}{a}$

step 3

This is confirmed by the asksia-ll calculation list, which states that the answer to $a^{-1}$ is $1/a$

C

Key Concept

Negative Exponent Rule

Explanation

The negative exponent rule states that $a^{-n} = \frac{1}{a^n}$, where $n$ is a positive integer. In this case, $a^{-1} = \frac{1}{a}$.

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