Write the complex number in trigonometric form. Begin by sketching the graph to help find the argument ?.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: A
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Find the standard deviation s for the given data. Round your answer to one more decimal place than the original data.The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the standard deviation. Round your answer to one decimal place. 
A. 5.4 B. 5.7 C. 7.0 D. 5.2
Factor completely. If the polynomial cannot be factored, say it is prime.15x2 - 9xy - 20xy + 12y2
A. (3x - 4y)(5x - 3y) B. (3x + 4y)(5x - 3y) C. (3x - 4)(5x - 3) D. (15x - 4y)(x - 3y)
Provide an appropriate response.What is wrong with the following problem? 
0.004
What will be an ideal response?
Write the mixed number as an improper fraction.286
A. 289
B. 
C. 858
D. 