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28 December, 22:19

Which of the following are solutions to the system

{5x-2y=10

-2.5x+y=-5? Select two answers.

A.

(2,0)

B.

(-2,-10)

C.

(2,-5)

D.

(-2,5)

E. (0, 2)

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Answers (1)
  1. 28 December, 22:28
    0
    A & B

    Step-by-step explanation:

    5x - 2y = 10 (1)

    -2.5x + y = - 5 (2)

    When you multiply (2) by - 2, you get (1), so there can be many solutions

    To choose from the given options, plug in the values to check which ones satisfy the equation

    5x - 2y = 10

    A) (2,0)

    5 (2) - 2 (0) = 10

    10 = 10 (true statement)

    B) (-2,-10)

    5 (-2) - 2 (-10) = 10

    -10 + 20 = 10

    10 = 10 (true statement)
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