The length of a rectangle is 3 less than twice the width if the perimeter is 30 find the length and width

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03-10-2017
Mathematics

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The length of a rectangle is 3 less than twice the width if the perimeter is 30 find the length and width

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jpGymnastics7Books jpGymnastics7Books · Answer 1 · 2017-10-04T02:03:50+02:00

jpGymnastics7Books jpGymnastics7Books

04-10-2017

Let x = width
2x-3= length

2W + 2L = Perimeter
2(x) + 2(2x-3) = 84
2x+4x-6=84
6x-6=84
6x-6=84+6
6x=90
x=15 ft Width
2x-3 = 2*15-3 = 27 ft Length

Check: 2*15 + 2*27
30 +54
84 It checks!!

I hope this helped!

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