Which equation can be used to find the solution of (1/3)^d−5=81 ?
Mathematics · Middle School · Tue Nov 03 2020
llm
Answered on
We have,
(1/3)^d−5=81
We know, (1/a)^n = a^-n
And, if a^n = a^m
n = m
(1/3)^d−5=81
It can be written as
3^-(d-5) = 3^4
3^-d + 5 = 3^4
-d + 5 = 4 …1
d = 5 - 4
d = 1
Equation 1 can be used to find the solution.