Question

Evaluate 5^-3a.-15b.1/125c.-1/125d. -125

Answer 1

B. 1/125

Step-by-step explanation:

Given the expression:

`5^(-3)`

First, apply the negative index law of indices:

`=(1)/(5^3)`

Next, evaluate the exponent.

`\begin{gathered} =(1)/(5*5*5) \\ =(1)/(125) \end{gathered}`

The correct choice is B.