anonymous
  • anonymous
The floor of a shed has an area of 88 square feet. The floor is in the shape of a rectangle whose length is 5 feet less than twice the width. Find the length and the width of the floor of the shed. ??????
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
how do you find the area of a rectangle?
anonymous
  • anonymous
l*w
anonymous
  • anonymous
yes and now how can you say what the length is here using only the width?

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More answers

anonymous
  • anonymous
what number is 5 less than twice another number? use W for the other number
anonymous
  • anonymous
88=2w+(l-5)
anonymous
  • anonymous
i mean times (l-5)
anonymous
  • anonymous
close, but we need to get rid of the L... what is L? only using W and numbers and +-*/ ?
anonymous
  • anonymous
im not sure what your saying
anonymous
  • anonymous
5 less than twice W
anonymous
  • anonymous
how can you express that for algrebra?
anonymous
  • anonymous
2w-5
anonymous
  • anonymous
exactly
anonymous
  • anonymous
so that is the length and Area = Width * Length so...
anonymous
  • anonymous
you know the Area, we are using W for the width, and you know the Length so plug them in and solve for W
anonymous
  • anonymous
ok so 88=W*2W-5
anonymous
  • anonymous
yes, but be careful here... you need parentheses
anonymous
  • anonymous
area = (Length)(Width)
anonymous
  • anonymous
88 = W (2W - 5)
anonymous
  • anonymous
ok distribute?
anonymous
  • anonymous
yes
anonymous
  • anonymous
2w^2 - 5w - 88 = 0 solve for W and remember that L = 2W - 5
anonymous
  • anonymous
ok so then i get -11/2 and 8... well 11*8 equals 88 but the
anonymous
  • anonymous
then it doesnt match and idk im lost
anonymous
  • anonymous
forget the negative answer... go with the 8
anonymous
  • anonymous
the width is 8 so the length is 2(8)-5

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