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2 May, 18:39

If 3x-y=12, what is the value of 8x2y?

A) 212

B) 44

C) 82

D) The value cannot be determined from the information given.

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Answers (2)
  1. 2 May, 18:50
    0
    D

    Step-by-step explanation:

    3x-y=12

    rearranging y=3x-12 or x=y/3+4

    8x*2y

    =8x * (3x-12) or 8 (y/3+4) * 2y

    =24x^2-96x or 16y^2/3+64y

    either one value cannot be determined unless x or y is known

    so ans is D) The value cannot be determined from the information given.
  2. 2 May, 19:01
    0
    D.

    Step-by-step explanation:

    3x - y = 12 or:-

    y = 3x - 12

    There are infinitely many values for x and y which fit this relation, so the value of 8x2y cannot be determined from the given information.
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