(50 Points) Which equation combines with the given equation to form a system of equations with the solution x = 3 and y = 9? x

Question

(50 Points)
Which equation combines with the given equation to form a system of equations with the solution x = 3 and y = 9?
x + 2y = 21

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Yến Oanh 4 years 2021-08-25T02:33:45+00:00 2 Answers 96 views 0

Answers ( )

  1. thienan
    0
    2021-08-25T02:34:59+00:00
    Reply

    Answer:

    It’s option C.

    Step-by-step explanation:

    It’s right on edmentum. Also just use substitution. Not that hard.

  2. Helga
    0
    2021-08-25T02:35:31+00:00
    Reply

    x + 2y = 21
    3 + 2(9) = 21
    3 + 18 = 21
    So I think the equation is 3 + 2(9) = 21

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