Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal places.(12 cis 13.5°)(2 cis 7.5°)
A. -6.5728 + 10.0399i
B. 20.0797 + 22.4059i
C. 1.6733 - 1.0955i
D. 22.4059 + 8.6008i
Answer: D
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Estimate the magnitude of the error involved in using the sum of the first four terms to approximate the sum of the entire series.
, -1 < t ? 1
A. 
B. 
C. 0.20
D. 
Provide an appropriate response.If a, b, and c are real numbers, is this statement true or false? 
A. True B. False
Solve the problem.The average number of viewers per day for TV Show A is 2.0 million viewers while the average number of viewers per day for TV Show B is 27.0 million viewers. Find the unit ratio of the average number of viewers per day of TV Show B to the average number of viewers per day of TV Show A. What does your result mean in this situation?
A. 
; For every viewer watching TV Show A, there are about 27.5 viewers watching TV Show B.
B. 
; For every viewer watching TV Show A, there are about 13.5 viewers watching TV Show B.
C. 
; For every viewer watching TV Show A, there are about 13.6 viewers watching TV Show B.
D. 
; For every viewer watching TV Show A, there are about 2.25 viewers watching TV Show B.
Assume that, at a certain college, 33% of all physics majors belong to ethnic minorities. Given a random sample of 10 physics majors, find the probability of the indicated event. Round your answer as appropriate.Two or less belong to an ethnic minority.
A. .1990 B. .1080 C. .2888 D. .3070