Problem

4x2y=77x+2y=15
For the solution (x,y) to the system of equations shown above, what is the value of xy ?
A) 12
B) 14
C) 2
D) 4

Answer

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Answer

Final Answer: The value of xy is 4.

Steps

Step 1 :The system of equations is given by: 4x2y=77x+2y=15

Step 2 :We can solve this system by adding the two equations together, which will eliminate the y variable and allow us to solve for x.

Step 3 :The solution to the system of equations is x=2 and y=12.

Step 4 :We are asked to find the value of xy. Substituting the values of x and y we found, we get xy=212=4.

Step 5 :Final Answer: The value of xy is 4.

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