angeleyes42
18.07.2019 •
Mathematics
Which of the following must be true?
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Ответ:
The answer is C. h is perpendicular to g.
Ответ:
x = -8/3, y = 6
Step-by-step explanation:
3x+2y=4 so x = (4-2y)/3
6x+3y=2
substiute x into the second equation
6((4-2y)/3) +3y = 2
2(4-2y) + 3y = 2
8 - 4y + 3y = 2
-y = -6
y = 6
Replace y into the first equation
3x + 2 (6) = 4
3x +12 = 4
3x = -8
x = -8/3