anonymous
  • anonymous
Jackie has 3 square tablecloths with each side equal to k units. For each piece, she does something different to it according to each part below: Part A: Jackie stitched rectangular strips of cloth along two adjacent sides of the tablecloth to increase its length and width by p units each. What will be the change in the area of the tablecloth? Show your work. (4 points) Part B: Jackie cut off rectangular strips from two adjacent sides of the tablecloth to decrease its length and width by p units each. What will be the change in the area of the tablecloth? Show your work. (3 points)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Part C: Jackie cut off a strip of cloth from one side of the tablecloth and pasted the strip on an adjacent side of the tablecloth to increase its length by p units and decrease its width by p units. What will be the change in the area of the tablecloth? Show your work. (3 points)
anonymous
  • anonymous
can any one help
welshfella
  • welshfella
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anonymous
  • anonymous
ok
welshfella
  • welshfella
the area before strip = k^2 can you work out the area after?
anonymous
  • anonymous
idk
welshfella
  • welshfella
well they ask for the change in area so its the area of the 2 strips one has area k*p or kp the other has area p* (k + p) = p(k+p)
anonymous
  • anonymous
ok im starting to get it'
welshfella
  • welshfella
|dw:1438272295065:dw|
welshfella
  • welshfella
= kp + p(k + p)
welshfella
  • welshfella
we can simplify this to p^2 + 2kp
anonymous
  • anonymous
why is it 2kp
welshfella
  • welshfella
oh i got that last drawing wrong - ignore it kp + p(k + p) = kp + kp + p^2 = p^2 + 2kp
anonymous
  • anonymous
ok
welshfella
  • welshfella
|dw:1438272749401:dw|