Rotate the coordinate axes to change the given equation into an equation which has no cross product (xy) term. Identify the graph of the equation as a hyperbola, ellipse, parabola, a straight line, or parallel lines.6x2 + 12xy + 6y2 = 18
A. 12u2 - 6v2 - 18 = 0; Hyperbola
B. 12u2 - 18 = 0; Parallel lines
C. 12u2 + 6v2 - 18 = 0; Ellipse
D. 12u2 + 6v - 18 = 0; Parabola
Answer: B
Mathematics
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+ 1 ft
A. area: 7 sq ft, perimeter: 4 ft
B. area: 63 sq ft, perimeter: 8
+ 2 ft
C. area: (9 + 4
) sq ft, perimeter: 8
ft
D. area: 7 sq ft, perimeter: 8
ft
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A. 5 ? 30 + x B. 5x C. 5x + 30 D. 5(x + 30)
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Find the sum.[6 + (-24)] + [10 + (-23)]
A. -51 B. 63 C. -5 D. -31
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