Evaluate the expression.
2
A. 
B. - 
C. 
D. - 
Answer: C
Mathematics
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Determine the quadrant containing ?.csc ? < 0 and cos ? < 0
A. I B. II C. III D. IV
Mathematics
Add or subtract as indicated.(x3y2 - 5x2y3 - 2xy - 4) + (x2y3 - 5x3y2 - 4xy - 5)
A. -4x3y2 - 4x2y3 - 2xy - 9 B. 2x3y2 - 10x2y3 - 6xy - 9 C. -6x3y2 - 4x2y3 - 6xy - 9 D. -4x3y2 - 4x2y3 - 6xy - 9
Mathematics
Refer to the figure in which O is the center of the circle, 
and 
are tangents, m?AOD = 120°, AO = 5 m, PC = 6 m, PE = 18 m, PB = 7 m, AG = 8, and DG = 4m.
Find m?ADO.
Mathematics
Find the vertex of the graph of f(x) = -3x² - x - 2.
Mathematics