anonymous
  • anonymous
The work of a student to find the dimensions of a rectangle of area 8 + 12x and width 4 is shown below: Step 1: 8 + 12x Step 2: 4(2) + 4x(2) Step 3: 4(4 + 8x) Step 4: Dimensions of the rectangle are 4 and 4 + 8x In which step did the student first make an error and what is the correct step? Step 2; 4(2) + 4x(2) Step 2; 4(2) + 4(3x) Step 3; 4 + (4 + 8x) Step 3; 4 + (4 ⋅ 8x)
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
what do you know to be the formula of area of a rectangle ?
anonymous
  • anonymous
Base X Height
anonymous
  • anonymous
or base x width x height

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anonymous
  • anonymous
depending if its 3D or 2D
anonymous
  • anonymous
i learned from flvs. xD
anonymous
  • anonymous
now which is the base and which is the hight?
anonymous
  • anonymous
like i said.. in this case i dont know.
anonymous
  • anonymous
i think step 2 is wrong

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