25 points Select the correct answer. Which equation combines with the given equation to form a system of equations with the solution x = 3 and y = 9? x + 2y = 21 A. 4x + 6y = 64 B. 2x + y = 36 C. 4x +

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asked Nov 26, 2021 78.3k views

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25 points

Select the correct answer.
Which equation combines with the given equation to form a system of equations with the solution x = 3 and y = 9?

x + 2y = 21

A.
4x + 6y = 64
B.
2x + y = 36
C.
4x + y = 21
D.
-3x + 4y = 33
E.
3x + 2y = 28

Mathematics
middle-school

VinuBibin asked

by VinuBibin

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2 Answers

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A=21 which is the correct answer
C=21 is also correct
Both A and C are correct

Danil Chernokalov answered Nov 27, 2021

by Danil Chernokalov

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7 votes

C. 4x + y = 21

4(3) + 9 = 21
12 + 9 = 21
21 = 21

Hardik Parmar answered Dec 1, 2021

by Hardik Parmar

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