Answer:
(2,-3)
x=2 y=-3
Step-by-step explanation:
2x+y=1 y=1-2x
3x+2y=0
3x+2(1-2x)=0
3x+2-4x=0
-x+2=0
-x=-2
x=2
2x+y=1
2(2)+y=1
4+y=1
y=-3
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Answer:
Option (2) is correct.
a = 3
Step-by-step explanation:
Given : equation 4a + 3(a + 1) = 24
We have to solve for a and choose the correct option from the given options.
Consider the given equation 4a + 3(a + 1) = 24
Multiply each term in bracket with 3, we have,
4a + 3a + 3 = 24
Adding 4a and 3a , we have,
7a + 3 = 24
Subtract 3 both sides, we have,
7a + 3 - 3 = 24 - 3
Simplify,
7a= 21
Divide both side by 7, we have,
a = 3
Thus, option (2) is correct.
Answer:
The answer to number 9 is: 148.16
Y=(1/2)x cause the constant variation is 1/2