Find zw or 
as specified. Leave your answer in polar form.z = 10(cos 30° + i sin 30°)w = 5(cos 10° + i sin 10°)Find zw.
A. 15(cos 300° + i sin 300°)
B. 50(cos 40° + i sin 40°)
C. 15(cos 40° + i sin 40°)
D. 50(cos 300° + i sin 300°)
Answer: B
Mathematics
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Use the integral test to determine whether the series converges.
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Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(2
+ 5)(3
+ 8)
A. 46
+ 16
B. 58 + 31
C. 62
D. 40 + 6
+ 16
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Solve the system of equations. x + y + z = 7 x - y + 2z = 75x + y + z = 11
A. (1, 4, 2) B. (4, 2, 1) C. (4, 1, 2) D. (1, 2, 4)
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Find the sum of the sequence.
A. 230 B. 55,260 C. -230 D. 30
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