anonymous
  • anonymous
The width of a rectangle is 6 in. less than its length. The perimeter is 68 in. What is the width of the rectangle?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
im a bit confused
jim_thompson5910
  • jim_thompson5910
I'd start off by drawing a picture |dw:1449193043364:dw|
jim_thompson5910
  • jim_thompson5910
L = some unknown length the width is L-6 since the width is 6 less than the length |dw:1449193079843:dw|

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More answers

jim_thompson5910
  • jim_thompson5910
to get the perimeter, add up all 4 sides then set it equal to the given perimeter 68 solve for L and then use it to find L-6
anonymous
  • anonymous
68/4 right?
anonymous
  • anonymous
hello?
jim_thompson5910
  • jim_thompson5910
let me check
anonymous
  • anonymous
ok
jim_thompson5910
  • jim_thompson5910
how did you get to 68/4? can you tell me what you got for L itself?
anonymous
  • anonymous
i havent went that far im confused on the formula
jim_thompson5910
  • jim_thompson5910
do you agree with this drawing? |dw:1449193547741:dw|
anonymous
  • anonymous
yeah it makes sense
jim_thompson5910
  • jim_thompson5910
ok what happens when you add up all the sides?
jim_thompson5910
  • jim_thompson5910
what expression do you get?
anonymous
  • anonymous
p-12
jim_thompson5910
  • jim_thompson5910
L+L = ???
anonymous
  • anonymous
0
jim_thompson5910
  • jim_thompson5910
1 apple + 1 apple = 2 apples 1 L + 1 L = ???
anonymous
  • anonymous
oh 2L i was thinking l was taking place 4 a number
jim_thompson5910
  • jim_thompson5910
ah I see anyways, what is (L-6) + (L-6) equal to?
anonymous
  • anonymous
= p-12 p= perimeter
jim_thompson5910
  • jim_thompson5910
I agree with the -12 where did the p come from? we're working with L for now
jim_thompson5910
  • jim_thompson5910
(L-6) + (L-6) = 2L - 12
anonymous
  • anonymous
oh wait L-12 we arent at permeter yet
jim_thompson5910
  • jim_thompson5910
if you add up ALL four sides, we will get 4L - 12 make sure you understand how I got 4L - 12. If you don't see how I got it, feel free to ask
anonymous
  • anonymous
each side is one L right?
jim_thompson5910
  • jim_thompson5910
there are 2 sides that are L there are 2 sides that are L-6
jim_thompson5910
  • jim_thompson5910
|dw:1449194028842:dw|
anonymous
  • anonymous
ok so how did u get 2 4L
jim_thompson5910
  • jim_thompson5910
|dw:1449194051605:dw|
anonymous
  • anonymous
ok so they r seperate right?
jim_thompson5910
  • jim_thompson5910
so hopefully you see how I'm getting `4L - 12` ??
anonymous
  • anonymous
yeah im up 2 date now
jim_thompson5910
  • jim_thompson5910
ok so we know that `4L - 12` is the perimeter in terms of L but we also know that 68 is the actual perimeter so we can set up this equation 4L - 12 = 68
anonymous
  • anonymous
ok i can solve from here
jim_thompson5910
  • jim_thompson5910
ok great
anonymous
  • anonymous
4L - 12 = 68 4L =80 20
jim_thompson5910
  • jim_thompson5910
L = 20 is correct now compute L-6
anonymous
  • anonymous
ok so what do u want me to insert it into the equation
jim_thompson5910
  • jim_thompson5910
L = 20 L - 6 = 20 - 6 = 14 so the length is 20, the width is 14
anonymous
  • anonymous
ok thx
anonymous
  • anonymous
ill update u tomorrow if its right
anonymous
  • anonymous
@jim_thompson5910 thx it was right im sending this from the school bathroom right now lol

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