anonymous
  • anonymous
1. The perimeter of a rectangle is 78 cm. The length is 3 greater than twice its width. Find the dimensions. length width
Algebra
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
help?
Shiree19
  • Shiree19
what are the choices?
Shiree19
  • Shiree19
what are the choices? @slimshadee

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More answers

Nnesha
  • Nnesha
translate this into math equation `The length is 3 greater than twice its width. ` let length = L and width = w greater than means + sign is means `=` equal sign now translate that plz
Nnesha
  • Nnesha
and perimeter of a rectangle 2w+2L= p replace p with given perimeter
anonymous
  • anonymous
|dw:1441904936768:dw|
Nnesha
  • Nnesha
yes that's how we get 2w+2W= P what is the perimeter in that question ? replace p with that
anonymous
  • anonymous
but how do i get the number? add or what?
Nnesha
  • Nnesha
you need two equation to get the length and width first one is 2w+2L= 78 perimeter is 78 so replaced p with 78 now translate 2nd equation which is ` The length is 3 greater than twice its width`
anonymous
  • anonymous
hoe do u get 70? thats what im trying to fugure out..
Nnesha
  • Nnesha
70 or 78 ?
Nnesha
  • Nnesha
the equation we use for perimeter of rectangle is 2w+2L= P ( where p is perimeter L is length and w is width) now read the first sentence of the question `The perimeter of a rectangle is 78 cm` Perimeter = P which is 78 so i replace p with 78 in this equation `2w+2L=78`

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