136 = 1/2(16)(7 + b2)
272 = 16(7 + b2)
17 = 7 + b2
b2 = 10
David W.
tutor
I multiplied both sides by 2 to get rid of the 1/2, then I divided both sides by 16 to get 17 on the left side. I should have shown my work!
Report
10/01/18
Kari M.
10/01/18