Asked by anonymous
the length of a rectangle is 1 cm less than twice its width. the area is 28 cm squared. find the dimensions of the 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
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
Answers
Answered by
Jeri
width = 4
length + 7
length + 7
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