Solve the problem.Find an equation of the line containing the centers of the two circles x2 + y2 + 8x - 2y + 16 = 0
and x2 + y2 + 2x + 6y + 6 = 0
A. -4x + 3y + 13 = 0
B. -2x + 5y + 13 = 0
C. 4x - 3y + 13 = 0
D. 4x + 3y + 13 = 0
Answer: D
Mathematics
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A. 0.014 B. 0.007 C. 0.14 D. 0.07
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Let x be a number. Translate the expression into an English phrase.x + 44
A. A number divided by 44 B. A number multiplied by 44 C. A number increased by 44 D. A number decreased by 44
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Solve the system of equations. x + y + z = 7 x - y + 2z = 75x + y + z = 11
A. (1, 4, 2) B. (4, 2, 1) C. (4, 1, 2) D. (1, 2, 4)
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Identify and graph the conic section. Label the center and/or vertex as appropriate.y = -4(x + 1)2 + 3
A. parabola; vertex (-1, 3)
B. parabola; vertex (1, 3)
C. parabola; vertex (-1, 3)
D. parabola; vertex (-1, 3)
Mathematics