RioQNA
19.07.2019 •
Mathematics
Given the following system what is the value of x?
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Ответ:
3x +y = -4
replace Y in the 2nd equation with y from the 1st equation:
3x + 2x +1 = -4
3x +2x = 5x, so now you have:
5x +1 = -4
subtract 1 from each side:
5x = -5
divide both sides by 5 to get x
x = -5 / 5
x = -1
Ответ:
3x + y = -4
re-write
y = 2x + 1
y = -3x - 4
both equations are equivalent so
2x + 1 = -3x - 4
5x = -5
x = -1
plug in x = -1 into y = 2x +1 to find y
y = 2x +1
y = 2(-1) +1
y = -1
Answer
Solution: x = -1 and y = -1
Ответ:
Q =11
All you have to do is plug in 11 for Q.
11-3 / 2 = 8/2 = 4