Question 77203: A=1/2h(B+b)(for b)area of a trapezoid
Isolate b on one side of the equals sign
B and b are 2 different variables. B does no = b
There is more than 1 correct answer to this question.
Your answer will be a formula, not a number.
You can put this solution on YOUR website! A=1/2h(B+b) [multiply each side by "2" in order to cancell "1/2"]
(1/h)2A=(1/h)h(B+b) [multiply each side by "1/h" in order to cancell the h-term
(2A)/h -B=b [subtract the B-term from both sides to cancell the B-term]
check by plugging b=(2A/h)-B back into the original equation and solve:
A=1/2h(B+[(2A/h)-B)[cancel wherever possible]
A=A [checks out]