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Nonamiya [84]
4 years ago
6

A building in a city has a rectangular base. The length of the base measures 75 ft less than three times the width. The perimete

r of this base is 810ft. What are the dimensions of the base?
Mathematics
2 answers:
Mamont248 [21]4 years ago
8 0
The perimeter of a rectangle is:
2L +2W = P
W = x
L = 3x - 75

2(x) + 2(3x - 75) = 810

2x + 6x - 150 = 810
8x = 960
x = 120; W = 120 ft. L = 285 ft
slega [8]4 years ago
6 0
P = 2l +2w
820 = 2(w - 70) + 2w
<span>820 = 4w - 140  </span>
<span>820 - 140 = 4w</span>
<span>680/4 = w
170 = w
let me know if you need an explanation of how i got any of the steps
:)</span>
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