Recent content by Ed I

  1. E

    Algebraic methods: the elimination method?

    I would multiply the second equation by -3 and add to the first, thereby eliminating the x-variables. 3x + 4y = 8.10 -3x - 9y = -12.60 -5y = -4.50 y = 0.90 x + 2.70 = 7.20 x = 4.50 (4.50, 0.90)
  2. E

    Is this a trick question or is it really THAT simple?

    Not quite. The ratio of the perimeters is the same as the scale factor. The ratio of the areas, however, is the square of the scale factor: (3/1)^2 = 9/1 = 9:1
  3. E

    Is this a trick question or is it really THAT simple?

    Not quite. The ratio of the perimeters is the same as the scale factor. The ratio of the areas, however, is the square of the scale factor: (3/1)^2 = 9/1 = 9:1
  4. E

    Is this a trick question or is it really THAT simple?

    Not quite. The ratio of the perimeters is the same as the scale factor. The ratio of the areas, however, is the square of the scale factor: (3/1)^2 = 9/1 = 9:1
  5. E

    Is this a trick question or is it really THAT simple?

    Not quite. The ratio of the perimeters is the same as the scale factor. The ratio of the areas, however, is the square of the scale factor: (3/1)^2 = 9/1 = 9:1
  6. E

    Is this a trick question or is it really THAT simple?

    Not quite. The ratio of the perimeters is the same as the scale factor. The ratio of the areas, however, is the square of the scale factor: (3/1)^2 = 9/1 = 9:1
  7. E

    Is this a trick question or is it really THAT simple?

    Not quite. The ratio of the perimeters is the same as the scale factor. The ratio of the areas, however, is the square of the scale factor: (3/1)^2 = 9/1 = 9:1
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