The perimeter of a rectangular wooden deck is 90 feet the decks length l is 5 feet less than 4 times it's with, w. Find the length and width of the wooden deck

Question

Mathematics

Urijah

4 June, 04:56

The perimeter of a rectangular wooden deck is 90 feet the decks length l is 5 feet less than 4 times it's with, w. Find the length and width of the wooden deck

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Gracie Lindsey · Answer 1

P=2 (l) + 2 (w)

90=2 (4w-5) + 2 (w)

90 = (8w-10) + 2w

90=10w-10

10+90=10w-10+10

100=10w

w=10

90=2 (4[10]-5) + 2 (10)

90=2 (40-5) + 2 (10)

90=2 (35) + 20

90=70+20

90=90