anonymous
  • anonymous
The perimeter of a retangle is 40m. The length is 8m more than twice the width. find the demensions. what is the lenght and width please?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
it is 16 lenght and 4 width?
anonymous
  • anonymous
Let p= perimeter, l=length, and w=width. p=2l+2w=40 l=8+2w 40=2(8+2w) +2w Divide both sides by two: 20=8+2w+w=8+3w Subtract 8: 12=3w w=12/3=4
anonymous
  • anonymous
don't forget your units!

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anonymous
  • anonymous
So what does that make the width and what does that make the length? please I will give a medal!!!
anonymous
  • anonymous
p = 2(w + h) 40 = 2(4 + h) 40 = 8 + 2h 32 = 2h h = 16
anonymous
  • anonymous
I only need to the width and the length!
anonymous
  • anonymous
W = 4, L = 16
anonymous
  • anonymous
that is what I put first!

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