Rationalize the denominator.
A. 
B. 
C. 
D. -1
Answer: C
Mathematics
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Decide whether the figure is convex or concave.
A. Concave B. Convex
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Add the given pair of complex numbers geometrically.z1 = -4 - 9i, z2 = 9 + 7i
A. 0 + 2i B. 0 - 2 C. 5 + 2i D. 5 - 2i
Mathematics
Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Mathematics
Divide using synthetic division.
A. x3 - 2x2 + x + 6 + 
B. x3 - 2x2 + x + 4 + 
C. x3 - 2x2 - x + 4 - 
D. x3 + 2x2 - x + 6 - 
Mathematics