The system of the linear systems of equation using substitution is;
- x = 2, y = 2
- x = -20, y = -1
<h3>Linear equation</h3>
3x-y=4
x+2y=6
from (2)
x = 6 - 2y
substitute into (1)
3x-y=4
3(6 - 2y) - y = 4
18 - 6y - y = 4
- 6y - y = 4 - 18
-7y = -14
y = 2
Substitute into
x+2y=6
x + 2(2) = 6
x + 4 = 6
x = 6 - 4
x = 2
2. 2x-y= -39
x+y= -21
From (2)
x = -21 - y
substitute into
2x-y= -39
2(-21 - y) - y = -39
-42 - 2y - y = -39
- 2y - y = -39 + 42
- 3y = 3
y = 3/-3
y = -1
substitute into
x+y= -21
x + (-1) = -21
x - 1 = -21
x = -21 + 1
x = -20
3. 2x+y =11
6x-5y =9
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X= amount of orange juice in the beginning
3/4=(3/8)X
.75=.375X
.75/.375=X
X=2
there were 2 liters in the beginning
Answer:
A
Step-by-step explanation:
...
Answer:
1. -30
2. undefined
3. x intercept = 5/4 (5/4, 0)
y intercept = 5 (0, 5)
4. x intercept = 4/5 (4/5, 0)
y intercept = 4 (0, 4)
5. y = 4
6. undefined
Step-by-step explanation:
1. 12+18/11-12
30/-1 = -30
2. -15 + 20/-18 + 18
5/0 = undefined
3. 4x + y = 5
0 + y = 5
y = 5
4x + 0 = 5
x = 5/4
4. y = 0 - 4
y = 4
0 = 5x - 4
4 = 5x
4/5 = x
5. y = mx + b
4 = 0(3) + b
4 = b
y = 0x + 4
y = 4
6. If a line is drawn through 1 it will be undefined
Answer:
is there any answer choices?
Edit: the answer is $339.79
"balance" means addition