algebra
posted by i could not do it can u?? .
a,b and c are real numbers such that ab=44, bc=112 and a+c=13. What is the value of b?

a = 44/b
c = 112/b
so
44/b + 112/b = 13
156 = 13 b
b = 12 
This is a problem posted by Brilliant (dot) org, which provides weekly problem sets for students to work on independently.
Please refrain from posting your solution for this student to copy.
Calvin Lin
Brilliant Challenge Master