Homework Help: math

Posted by anonymous on Tuesday, May 8, 2007 at 8:55pm.

the length of a rectangle is 1 cm less than twice its width. the area is 28 cm squared. find the dimensions of hte rectangle.

Just translate the English into "math"

"the length of a rectangle is 1 cm less than twice its width"

l=2w-1

"the area is 28"

w(2w-1) = 28

solve as a quadratic.
Hint: it factors very nicely

math - Jeri, Friday, May 6, 2011 at 6:53pm
width = 4
length + 7

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