lovebethy18p241jt lovebethy18p241jt
  • 13-01-2018
  • Mathematics
contestada

what is the solution to the following system of equations -5x-4y=-4 25x+20y=20

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MissionExam001
MissionExam001 MissionExam001
  • 13-01-2018
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batsonbiscuit62 batsonbiscuit62
  • 20-06-2019

Answer:

(4, -4)

Step-by-step explanation:

By plugging in the 4 and -4 for x and y respectively, you come up with a true statement, which means it is the correct answer choice.

-5(4) - 4(-4) = -4

-20 + 16 = -4 .     (remember multiplying two negatives = a positive)

25(4) + 20(-4)

100 + (-80) = 20

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