Answer:
x=5.5
Step-by-step explanation:
all angles of a triangle add to 180. so add set the sum of the angles equal to 180. and solve for x
2x - y = 9
3x + 4y = -14
To solve this system using elimination, one of the pairs of variable terms must cancel each other out. Their coefficients must be opposites of each other.
Multiply the top equation by 4.
2x - y = 9
4(2x - y = 9)
8x - 4y = 36
Add the equations together.
8x - 4y = 36
3x + 4y = -14
+___________
11x - 0 = 22
11x = 22
x = 2
Substitute 2 for x into either of the original equations to find y.
2x - y = 9
2(2) - y = 9
4 - y = 9
-y = 5
y = -5
Finally, check work by plugging x- and y-values into each original equation.
2(2) - (-5) = 9 --> 4 + 5 = 9 --> 9 = 9 --> True
3(2) + 4(-5) = -14 --> 6 - 20 = -14 --> -14 = -14 --> True
Answer:
x = 2 and y = -5; (2, -5).
Answer:
60%
the reason its 60 percent is because if u think of 20,000 as just 20 its much easier
Answer:127
all you do is subtract -70 by 57 and it will give you a negative but get rid of it and you get 127 or just take the - away from -70 and add 57
Answer:
y=−2x−2
Step-by-step explanation:
i hope it helps
have a good day ^_^
