Find the missing number.?2 = 121
A. 11
B. -2
C. -11
D. 
Answer: A
Mathematics
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Find the vertices of the ellipse.36(x + 3)2 + 25(y - 1)2 = 900
A. (3, 7), (3, -5)
B. (-3, 1 - 
), (-3, 1 + 
)
C. (-2, 7), (-2, -5)
D. (-3, 7), (-3, -5)
Mathematics
Solve the problem.Find the mass of the region of density 
bounded by the hemisphere 
and the xy-plane.
A. 40? B. 20? C. 10? D. 80?
Mathematics
Convert to scientific notation.2,166,000,000
A. 2.166 × 106 B. 2.166 × 109 C. 216.6 × 107 D. 2166 × 106
Mathematics
Solve the problem.In a wallpaper pattern, the only possible angle(s) of rotational symmetry are the identity and
A. 60°, 90°, 180°. B. 180°. C. 60°, 90°, 120°, 180°. D. 90°, 180°. E. none of these
Mathematics