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anonymous
 one year ago
Trevor solved the system of equations below. What mistake did he make in his work?
2x + y = 5
x − 2y = 10
y = 5 − 2x
x − 2(5 − 2x) = 10
x − 10 + 4x = 10
5x − 10 = 10
5x = 0
x = 0
2(0) + y = 5
y = 5
a. He should have substituted 5 + 2x
b. He combined like terms incorrectly, it should have been 4x instead of 5x
c. He subtracted 10 from the right side instead of adding 10 to the right side
d. He made no mistake
anonymous
 one year ago
Trevor solved the system of equations below. What mistake did he make in his work? 2x + y = 5 x − 2y = 10 y = 5 − 2x x − 2(5 − 2x) = 10 x − 10 + 4x = 10 5x − 10 = 10 5x = 0 x = 0 2(0) + y = 5 y = 5 a. He should have substituted 5 + 2x b. He combined like terms incorrectly, it should have been 4x instead of 5x c. He subtracted 10 from the right side instead of adding 10 to the right side d. He made no mistake

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can anyone help.......

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1438297261357:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Add 10 to both sides

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1now read the question again and look at the answer choices

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh so it would be c?
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