MATHEMATICS COLLEGE

Use elimination to solve for x and y:9x - 4y = 11
x + 4y = 19
Select one:
a. (7,3)
b. (4,3)
c. (-1,5)
d. (3,4)

Answers

Answer 1
Answer:

Final answer:

The solution to the given equations using the elimination method is x=3 and y=4. Therefore, the answer pair is (3,4).

Explanation:

In order to solve this system of equations using elimination, you want to add or subtract the equations in a way that allows you to eliminate one of the variables. In this case, the y terms in the two equations are additive inverses (-4y and +4y). This means that if you add the equations together, the y variable will be eliminated.

So, let's add the two equations:
9x - 4y + x + 4y = 11 + 19
This simplifies down to 10x = 30, and when you divide both sides by 10, you get x = 3.

Next, substitute x = 3 into the second equation:
3 + 4y = 19
Solve for y by subtracting 3 from both sides and then dividing by 4. You'll find that y = 4. So the solution to the system of equations is (3,4).

Learn more about System of Equations here:

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Step-by-step explanation:

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Answers

Hello.

-8.46 is less than 5.31, because it is negative.

Answer:

-8.46 is less than 5.31

Step-by-step explanation:

-8.46 is a negative number, which is smaller than the positive number 5.31

Positive numbers are always greater than negative numbers.

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Answers

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Step-by-step explanation:

Thanks.
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