Question

HELP ME WITH THESE PLEASE AND SHOW ALL YOUR WORK

Answer 1

12. x =
`√(7)`

15. x =
`√(330)`

Explanation:

12. 7
`x^(2)` = 49

`(7x^2)/(7)`=
`(49)/(7)`

`x^(2)` = 7

`√(x^2)` =
`√(7)`

x =
`√(7)`

15.
`(x^2)/(3\\)`=110

3*
`(x^2)/(3)` = 110*3

`x^(2)` = 330

`√(x^2)` =
`√(330)`

x =
`√(330)`