Answer:
A, C
Step-by-step explanation:
10x+ 4y = -2
5x -2y = 2
We can multiply the first equation by 1/2
5x+2y = -1
And then add the equations to eliminate y
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10x +0y = 1
Adding the equations will not eliminate any variables
15x +2y =0
Multiply the bottom equation by 2 and then subtract
10x -4y = 4
-10x +4y = -4
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0x +8y = -6 will eliminate x
Answer A, C
When multiplying the bottom equation by two, you get 10x-4y=4
After subtracting 10x-4y=4 and the top equation you will be able to eliminate the variable x.
You can also also get the same result and eliminate a variable with answer A.
106 m^2
First multiply the shaded area:
12 * 10 = 120
Then multiply the white space:
7 * 2 = 14
Then subtract the white space from the shaded area to find the area of only the shaded area.
120 - 14 = 106
Final answer: 106 m^2
I hope this helps!
x = -2, x = 1
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