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27.07.2019 •
Mathematics
Solve the following system: y = x + 3 3x + y = 19 a( 4, −7) b (4, 7) c (−4, 7) d (7, 4)
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Ответ:
3x + y = 19
3x + x + 3 = 19
4x + 3 = 19
4x = 19 - 3
4x = 16
x = 16/4
x = 4
y = x + 3
y = 4 + 3
y = 7
so ur solution is (4,7) <==
Ответ:
option B
Step-by-step explanation:
we have
Substitute equation A in equation B
Find the value of y
the solution is the point
Ответ:
But only 2equal triangles can fit