Question

Which expressions are equivalent? Check all that apply. 39 34 â€""92 99 811.

Answer 1

The equivalent expression is $3^4, 9^2$ and $81^1$.

The given expression is as follows;

$3^9, 3^4, 9^2, 9^9, 81^1$

We have to determine

Which expressions are equivalent?

According to the question

To determine the equivalent expression solving their power and determine their values.

1. The value of the $3^9$ is,

$= 3^9\\\\= 3\times 3 \times 3 \times 3\times 3\times 3\times 3\times 3\times 3\\\\= 19683$

2. The value of the $3^4$ is,

$= 3^4\\\\= 3\times 3 \times 3 \times 3\\\\= 81$

3. The value of the $9^2$ is,

$= 9^2\\\\= 9\times 9\\\\= 81$

4. The value of the $9^9$ is,

$= 9^9\\\\= 9\times 9 \times 9\times 9\times 9\times 9\times 9\times 9\times 9\\\\= 387420489$

5. The value of the $81^1$ is,

$= 81^1\\\\= 81$

Hence, the equivalent expression is $3^4, 9^2$ and $81^1$.

To know more about Expression click the link given below.

brainly.com/question/26079523