SOLUTION: Helping my child do her math and could use some help.
The length of a rectangle is 9 cm less than twice its width. If the area of the rectangle is 11cm squared, find the dimens
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Question 863010: Helping my child do her math and could use some help.
The length of a rectangle is 9 cm less than twice its width. If the area of the rectangle is 11cm squared, find the dimensions of the rectangle.
Many thanks in advance,
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the width
= the length
------------------------
The area = ( length ) x ( width )
Use the quadratic formula
and
------------------
The dimensions are:
5.5 cm x 2 cm
---------------
check:
cm2
OK
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