Question

I was told that the answer to this is -7 but I don't understand how to get there.

3125=(-1-18t)^5/3

Answer 1

The answer to your question is: - 7

Explanation:

3125 = (- 1 - 18t) ⁵/³

(3125)³ = ( -1 - 18t)⁵

(3125)³/⁵ = - 1 - 18t

125 = - 1 - 18t

125 + 1 = - 18t

126 = - 18t

t = 126 / -18

t = -7

3125³ = 3.0518 x 10¹⁰

`\sqrt[5]{3.0518 x 10¹⁰}` = 125