SOLUTION: If x²-z²=130 and x-z=10 then x+z = ? a) 10 b) 13 c) 36 d) 30 e) 120 Help me please! :)

Algebra ->  Equations -> SOLUTION: If x²-z²=130 and x-z=10 then x+z = ? a) 10 b) 13 c) 36 d) 30 e) 120 Help me please! :)      Log On


   

Question 479237: If x²-z²=130 and x-z=10 then x+z = ?
a) 10
b) 13
c) 36
d) 30
e) 120
Help me please! :)
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
(x+z)(x-z)=130
(x-z)=10
so (x+z)=13