Solve by the substitution method.x + 6y = -62x + 7y = -12
A. {(-6, 0)}
B. {(6, -1)}
C. {(x, y)|x + 6y = -6}
D. ?
Answer: A
Mathematics
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A ? B ? C
A. {11} B. {1, 5} C. {2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14} D. {2, 3, 6, 7, 8, 9, 10, 14}
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Solve the linear equation.7x + 20 - 3x = 8x + 4
A. 16 B. -4 C. 4 D. -16
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Graph the circle. Identify the center.(x - 4)2 + (y - 1)2 = 9
A. center: (4, 1)
B. center: (- 4, - 1)
C. center: (- 4, - 1)
D. center: (4, 1)
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Decide whether the ordered pair is a solution of the given system.
A. No B. Yes
Mathematics