nautyka nautyka

23-08-2017
Mathematics

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The perimeter of a rectangle room is 250 feet the length is 35 feet less than three times the width what is the length of the room

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mreijepatmat mreijepatmat

23-08-2017

Perimeter of rectangle:
P = 2(L + W)
P = 250 (given)
L = 3W - 35 (given)

250 = 2(3W -35 + W) ↔ 125 = 4W - 35

4W = 125 +35 =160 And W = 40 ft
And L = 3x40 - 35 = 85 ft

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