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.

Question

Mercury · Answer

A = lw + 0.5bh

to approach this, we want to do the opposite of what's being done to b, keeping in mind the order of operations

start by subtracting lw from both sides. done correctly and you'll end up with 0.5bh on one side. from there, divide both sides by 0.5h to isolate b