Two walls are 26ft long by 9 9ft wide the other wall is 18ft long by 9ft wide. Each gallon of paint covers about 250sq ft how ma
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Taking the square root of both sides gives two possible cases,
or
Recall that
If and
, we have
so in the equations above, we can write
Then in the first case,
(where is any integer)
and in the second,
Then the solutions that fall in the interval are