Use the discriminant to decide whether the equation represents a parabola, an ellipse, or a hyperbola.8x2 - 5xy + 5y2 - 20 = 0
A. Ellipse
B. Parabola
C. Hyperbola
Answer: A
Mathematics
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Graph the function.y = -3 cos x 
A. 
B. 
C. 
D. 
Mathematics
Find all complex roots. Write the answer in polar form, with 0 ? ? ? 360°.Cube roots of 5 + 5i
A. 
(cos 20° + i sin 20°), 
(cos 140° + i sin 140°), 
(cos 260° + i sin 260°)
B. 
(cos 20° + i sin 20°), 
(cos 140° + i sin 140°), 
(cos 260° + i sin 260°)
C. 
(cos 30° + i sin 30°), 
(cos 150° + i sin 150°), 
(cos 270° + i sin 270°)
D. 
(cos 20° + i sin 20°), 
(cos 140° + i sin 140°), 
(cos 260° + i sin 260°)
Mathematics
Classify the system as either consistent or inconsistent.
A. Consistent B. Inconsistent
Mathematics
Find the quotient.8 ÷ 1
A. 1 B. undefined C. 0 D. 8
Mathematics