Simplify.
A. -1
B. 1
C. 
D. 
Answer: D
Mathematics
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Find the area of the figure.
A. 200 ft2 B. 196 ft2 C. 204 ft2 D. 56 ft2
Mathematics
Find a rectangular equation for the plane curve defined by the parametric equations.x = 5 cos t, y = -2 sin t; 0 ? t ? 2?
A. 4x2 + 25y2 = 1; - 
? x ? 
B. 4x2 - 25y2 = 1; x ? 
C. 4x2 - 25y2 = 100; x ? 5
D. 4x2 + 25y2 = 100; -5 ? x ? 5
Mathematics
Graph the integrand and use areas to evaluate the integral.
A. 329 B. 238 C. 189 D. 119
Mathematics
Find the center, radius, and intercepts of the circle.x2 + y2 - 6y - 16 = 0
A. (h, k) = (0, 3), r = 5 x-int: x = ±4; y-int: y = 8, -2 B. (h, k) = (3, 0), r = 25 x-int: x = ±4; y-int: y = 8, -2 C. (h, k) = (0, -3), r = 25 x-int: x = 4; y-int: y = 8, -2 D. (h, k) = (0, 3), r = 5 x-int: x = 4; y-int: y = 8
Mathematics