madeleine1102
05.07.2019 •
Mathematics
2x+5y=-55 y=3x+6 what is the solution
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Ответ:
eq 2:y=3x+6
by substituting eq 2 in eq 1 we get,
2x+5(3x+6)=-55
2x+15x+30+55=0
17x + 85=0
x=-85/17
x=-5
By substituting x value in eq 2,
we have,
y=3(-5)+6=-15+6=-9
Ответ:
Hey there!!
We have 2 equations.
... 2x+5y=-55 and y=3x+6
Substitution method:
... 2x+5(3x+6)=-55
... 2x+15x+30=-55
... 17x+30=-55
Subtracting 30 on both sides:
... 17x=-55-30
... 17x=-85
Dividing by 17 on both sides:
... x=-85/17
... x = -5
The value of x is -5.
We have:
... 2x+5y=-55
... 2(-5)+5y=-55
... -10+5y=-55
Adding by 10 on both sides:
... 5y=-55+10
... 5y=-45
Dividing by 5 on both sides:
... y=-9
Hence, the value of 'x' is -5 and the value of 'y' is -9.
Hope my answer helps!
Ответ:
Acute angle
Step-by-step explanation:
The supplement of an obtuse angle is an acute angle