SOLUTION: Find the height and base of the parallelogram that has an area of 100 square units. Height=x base=x+15

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Question 150345: Find the height and base of the parallelogram that has an area of 100 square units.
Height=x
base=x+15
Answer by jojo14344(1512) About Me  (Show Source):
You can put this solution on YOUR website!
We start with the formula, Ap=base%2Aheight -----> basic eqn.
100squnits=x%2A%28x%2B15%29
100=x%5E2%2B15x
x%5E2%2B15x-100=0
%28x%2B20%29%28x-5%29=0
2 values:
x=-20 ----------> don't use, "negative"
x=5 ------------> the one to used = height
x%2B15=5%2B15=20 ---> = base
Go back basic eqn to check,
100=5%2A20
100square+units=100+square+units
Thank you,
Jojo