Question

Which of the following is a solution to 5√x - 7 = 10 ?

Answer 1

5√(x - 7) = 10
√(x - 7) = 10/5
√(x - 7) = 2
x - 7 = 4
x = 4 + 7
x = 11

Answer 2

I'm pretty sure my solution is correct.

Answer 3

5√x - 7 = 10
5√x = 10 + 7 = 17
5√x = 17
√x = 17/5 = 3.4
x = (3.4)square = 11.56

i hope ur question syntax is fine. do tell me when you have the answer.

Answer 4

sigh

Answer 5

x = 11 is the solution. Original poster just forgot to put parentheses

Answer 6

If you plug in 29/4, you get 2.5, not 10..

Answer 7

The OP used \[5\sqrt{x-7}=10\] Not \[5\sqrt{x-5}=10\]

Answer 8

The original poster awarded me with the medal by the way.

Answer 9

@Luis Besides, even with your equation, the solution is x=9.

@Hero, okay, I just wanted to make sure the the OP had the correct answer. :)