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6 July, 19:33

Which system of equations has infinitely many solutions?

A) 6x + 3y = 12

3x + y = 9

B) 2x + 3y = 6

4x + y = 8

C) 12x + 9y = 6

4x + 3y = 6

D) 5x + 10y = 20

2x+4y=8

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Answers (2)
  1. 6 July, 21:51
    0
    D)

    If you multiply 5x+10y=20 by 2 and 2x+4y=8 by 5 that are equal
  2. 6 July, 22:08
    0
    The answer is D.

    Divide the first equation by 5 to get

    x + 2y = 4

    Divide the second equation by 2 to also get

    x + 2y = 4

    Since they are the same equation it results in an answer that has infinitely many solutions.
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