Question

If 10^2y = 25, thrn 10^-y equals:​

Answer 1

Answer:

☆ 1/5

Step-by-step explanation:

☆ 10^-y= 1÷10^y

☆ 10^2y = 25

☆ 10^2y=5^2

☆ 10^(2y×(1/2))=5

☆ 10^y=5

☆ 1/10^y=1/5

Answer 2

Answer:

10^2y = 25

(10y)²= 52

10y = 5

1/10y = 1/5

10-y = 1/5