SOLUTION: what is the value of x in the equation ? (square root 5x)-12=13 a. 1/125 b. 1/5 c. 25 d. 125 tthanks!

Algebra ->  Expressions-with-variables -> SOLUTION: what is the value of x in the equation ? (square root 5x)-12=13 a. 1/125 b. 1/5 c. 25 d. 125 tthanks!      Log On


   

Question 308002: what is the value of x in the equation ?
(square root 5x)-12=13
a. 1/125
b. 1/5
c. 25
d. 125
tthanks!
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%285x%29-12=13 if Y=%28sqrt%285x%29%29 then
Y-12=13
Y=25
sqrt%285x%29=25 square both sides
5x=625divide by 5
x=125
Check
sqrt%285x%29-12=13
sqrt%285%28125%29%29-12=13
sqrt%28625%29-12=13
25-12=13
13=13
correct