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Fed [463]
3 years ago
13

Use the substitution method to solve the system of equations. Choose the correct ordered pair.

Mathematics
2 answers:
alisha [4.7K]3 years ago
6 0

Answer:

The answer is D or (10,-9)

Step-by-step explanation:

Since y is already given (and you have to use the substitution method) substitute y into one of the equations. So you should have something like this:

-2x+11=3x+21

After that merely solve for x which should get you x=10. After you get your x value plug 10 in either (of the original) equation and your y value should be -9. For example if you chose y=-2x+11 you should have y= -2(10)+11. In the end your answer should be (10,-9).

If you want to check your work merely plug your answer into both equations (ex: -9=-2(10)+11 --> -9=-9), therefore you know your answer is correct).

Hope this helped!

skelet666 [1.2K]3 years ago
4 0

Answer:

b

Step-by-step explanation:

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Set the equation equal to zero.

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Factor out x in the equation, since all the terms (x³, -2x², and -8x) are divisible by x. You can check your accuracy using the Distributive Property.

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