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Given the system of equations, what is the solution? x 2y = 7 x - 2y = -1 {(-8, -12)} {(3, 2)} {(-4, 6)}
Given the system of equations, the solution for x + 2y = 7 , x - 2y = -1 is x = 3 , y = 2 equation 1 add equation 2 x + 2y + x - 2y = 7 - 1 2x = 6 x = 6/2 x = 3 3 + 2y = 7 2y = 4 y = 4/2 y = 2.
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Asked 1/31/2018 7:31:50 PM
Updated 8/26/2022 9:47:22 AM
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Given the system of equations, the solution for x + 2y = 7 , x - 2y = -1 is x = 3 , y = 2

equation 1 add equation 2
x + 2y + x - 2y = 7 - 1
2x = 6
x = 6/2
x = 3
3 + 2y = 7
2y = 4
y = 4/2
y = 2.
Added 8/26/2022 9:47:22 AM
This answer has been confirmed as correct and helpful.
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Questions asked by the same visitor
The width of a rectangle is 7 inches less than its length. The area of the rectangle is 120 square inches. Solve for the dimensions of the rectangle.
Weegy: A square is a rectangle. This is TRUE. (More)
Question
Updated 7/20/2020 2:16:15 PM
1 Answer/Comment
A = L * W, W = L - 7
120 = L * (L - 7)
L^2 - 7L - 120 = 0
(L - 15)(L + 8) = 0
Use only the positive value which is L - 15.
L - 15 = 0
L = 15 inches
Solve for W:
W = L - 7
W = 15 - 7
W = 8 inches
Now lets check:
L * W = 120
15 * 8 = 120
120 = 120 (the values are correct)
L = 15 inches, W = 8 inches
Added 7/20/2020 2:16:15 PM
This answer has been confirmed as correct and helpful.
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