nolanjames1717 nolanjames1717

26-01-2018
Mathematics

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The length of a rectangle is 1 less than 2 times the width. The area of the rectangle is 45 cm squared. find the length and width.

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tynollette tynollette

27-01-2018

l=2w-1, lw=45
(2w-1)w=45
2w²-w-45=0
((w-5)(2w+9)=0
w=5
l=9

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