Plot the complex number.z = 2 - i
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the inequality and graph the solution set.-4x ? 36
A. {x | x ? 9}
B. {x | x ? 9}
C. {x | x ? -9}
D. {x | x ? -9}
Mathematics
Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = -8i - 4i + 4k, v = 0
A. 0; -8i - 4i + 4k
B. 0; no direction
C. 0; 
(-8i - 4i + 4k)
D. 4
; 
(-8i - 4i + 4k)
Mathematics
Factor.21x2 - 91x - 70
A. 21x2 - 91x - 70 B. (21x + 14)(x - 5) C. 7(3x + 2)(x - 5) D. 7(3x - 2)(x + 5)
Mathematics
Find the exact value of the expression.sin 220° cos 100° - cos 220° sin 100°
A. 
B. - 
C. - 
D. - 
Mathematics