Question

If 10^2y=25, then wat is 10^-y

Answer 1

{10)^y }² = 5²

=> if powers are equal , bases are equal

=> 10^y = 5

=> then ,

• 10^-y = 1 / 10^y = 1/5

{ same as , 2^-1 = 1/2 }

Answer 2

Answer:

1/5

Step-by-step explanation:

If 10^2y=25, then what is 10^-y

• 10^2y=25
• (10^y)^2=5^2
• 10^y=5
• 10^-y=5^-1
• 10^-y=1/5

Answer: 1/5