Find the requested value.Find f(-6) forf(x) = 
A. -11
B. 1
C. -54
D. 54
Answer: C
Mathematics
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Find the area.Find the area enclosed by the ellipse x = 10 cos t, y = 9 sin t, 0 ? t ? 2?.
A. 90?2 B. 100?2 + 81? C. 90? D. 180?
Mathematics
Give all solutions of the nonlinear system of equations, including those with nonreal complex components. x2 - xy + y2 = 32x2 + xy + 2y2 = 12
A. {(2, 1), (1, 2)} B. {(1, 0), (-1, 0)} C. {(2, 1), (-2, -1), (1, 2), (-1, -2)} D. {(2, 0), (-2, 0), (1, 0), (-1, 0)}
Mathematics
Solve using Gauss-Jordan elimination. 6x + 4y = 0 4x + 2y = -2
A. (3, -2) B. (-2, -3) C. (-2, 3) D. No solution
Mathematics
Solve by the quadratic formula. If there are no real roots, say so.4x2 + 10x = -2
A. x = 
B. x = 
C. x = 
D. x = 
Mathematics