For what value of y does 125=(1/25)^y-1 Question For what value of y does 125=(1/25)^y-1 in progress 0 Math Melody 1 month 2021-10-23T14:42:06+00:00 2021-10-23T14:42:06+00:00 2 Answers 0 views 0

## Answers ( )

Answer:y=-1/2

Step-by-step explanation:

125=(1/25)^(y-1)

5^3=(5^(-2))^(y-1)

5^3=5^(-2(y-1))

The same base eliminate each other we then have

3=-2(y-1)

3=-2y+2

Collect like terms

2y=2-3

2y=-1

Divide both sides by 2

2y/2=-1/2

y=-1/2

Answer:D. -1/2

Step-by-step explanation: