Question

What is the value of the expression 7^−3

A. 1/343
B.−21
C.343
D.1/343

Answer 1

Answer: A.
`(1)/(343)`

Explanation:

First, apply exponent rule.

`=(1)/(7^3)`

`7^3=7*7*7=343`

`=(1)/(343)`

Hope this helps!

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-Charlie