Perform the indicated operation. Write the answer in the form a + bi.4(cos 45° + i sin 45°) ? 6(cos 225° + i sin 225°)
A. -24
B. 24
C. -24i
D. 24i
Answer: C
Mathematics
You might also like to view...
Write the decimal number that represents the shaded part. 
A. 15.25 B. 3.75 C. 12.75 D. 3.25
Mathematics
The following double-bar graph illustrates the revenue for a company for the four quarters of the year for two different years. Use the graph to answer the question. 
Which quarter for 2010 had the greatest decrease in revenue compared to the same quarter for 2009?
A. second quarter B. first quarter C. fourth quarter D. third quarter
Mathematics
Find the standard deviation. Round to the nearest tenth.3, 3, 11, 9, 17, 15, 14, 10, 14
A. 1.3 B. 5.4 C. 4.7 D. 5.0
Mathematics
Solve the system using determinants.2x + 4y - 3z = 29-4y + 2z = -14-4x + 2z = -30
A. (9, 2, 1) B. (8, -4, -1) C. (4, 1, 4) D. (8, 4, 1)
Mathematics