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9966 [12]
3 years ago
6

The perimeter of a rectangle billboard is 60 feet and has a length 6 feet longer than its width. Find the dimensions of the bill

board.
Mathematics
2 answers:
zaharov [31]3 years ago
7 0
P=2l + 2w

l=6+w
60 = 2l+2w

60=2(6+w)+2w
60=12+2w+2w
60=12+4w
48=4w
12=w

l=6+(12)
l=18

length:18ft \\ width:12ft
just olya [345]3 years ago
5 0
x-width\\x+6-length\\\\2x+2(x+6)=60\\\\2x+2\cdot x+2\cdot6=60\\\\2x+2x+12=60\\\\4x+12=60\ \ \ \ /-12\\\\4x=48\ \ \ \ /:4\\\\x=12\ (ft.)\\\\x+6=12+6=18\ (ft.)\\\\Answer:18ft.\ \times\ 12ft.
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