Simplify.8a - 2a + a - 9
A. 6a + a - 9
B. 6a - 9
C. 6a - 8
D. 7a - 9
Answer: D
Mathematics
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Find the quotient 
of the complex numbers. Leave answer in polar form.z1 = 5(cos 200° + i sin 200°)z2 = 4(cos 50° + i sin 50°)
A. 
(cos 250° + i sin 250°)
B. 
(cos 150° - i sin 150°)
C. 
(sin 150° + i cos 150°)
D. 
(cos 150° + i sin 150°)
Mathematics
Solve the problem.Find the missing length in the following right triangle. If necessary, round to the nearest tenth. 
A. 12 cm B. 14.5 cm C. 72.5 cm D. 145 cm
Mathematics
Provide an appropriate response.FUTA tax must be paid:
A. six times per year B. at least once a year C. semiannually D. quarterly
Mathematics
Solve the absolute value equation.
= |-4|
A. 
B. 
C. 
D. ?
Mathematics