Question

solve 81^y=27

Answer 1

\[81^y = 27\]

Answer 2

solve for y?

Answer 3

Jus take logarithm base 81 of both sides, you'll get y = 3/4

Answer 4

can you please show me how to do this?

Answer 5

i'm new to this

Answer 6

@iambatman

Answer 7

sp when i eliminate 81, how to i do that, divide?

Answer 8

@iambatman

Answer 9

write them both with a base of 3

\[(3^4)^y = 3^3\]

applying the index law for power of a power

\[3^{4y} = 3^3\]

equate the powers

4y = 3

and now solve for y

Answer 10

ok thanks