The answer is C.
Just plug in x = 1 for each of them. The correct one is the one that gives y = 5, which is C.
Answer: x = -8 ; y = -6
Step-by-step explanation:
1*x-2*y=4
1*x = 4 + 2*y
x = 4 + 2*y
Now you replace the value of x on the following equation:
-1*x+10*y=8
-1*(4 + 2*y) = 8
-4 - 2*y = 8
-2*y = 8+4
-2*y = 12
y = -12/2
y = -6
You replace the value of y in the previous equation:
x = 4 + 2*y
x = 4 + 2*(-6)
x = 4 - 12
x = -8
The common ratio is 24 x 2 = 88 x 2 = 1616 x 2 =32
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3x-12+5-x=2x-7
2x-7 =2x-7
Means there are infinite solutions.
Answer:
80
Step-by-step explanation:
The sum of the opposite inscribed angles is 180
x+100 = 180
X = 80
