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Marcie wants to enclose her yard with a fence. Her yard is in the shape of a rectangle attached to a triangle. The formula for the area of the enclosed space is A = lw + 0.5bh. Solve for b.

A. b = A divided by the quantity l times w plus 0.5 times h

B. b = The quantity A minus l times w all divided by 0.5 times h

C. b = A – lw – 0.5h

D. b = A + lw + 0.5h

No Idea :o

Respuesta :

JcAlmighty
The answer is B. b = The quantity A minus l times w all divided by 0.5 times h 

A = lw + 0.5bh

Subtract lw from both sides:
A - lw = lw + 0.5bh - lw
A - lw = 0.5bh

Divide both sides by 0.5h
(A - lw)/0.5h = 0.5bh/0.5h
(A - lw)/0.5h = b

b = (A - lw)/0.5h
the quantity A minus l times w all divided by 0.5 times h 

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