Use De Moivre's theorem to evaluate the expression. Write the result in standard form.(2(cos 45° + i sin 45°))4
A. 16
B. -16i
C. 16i
D. -16
Answer: D
Mathematics
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Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.Find the amount of decrease and the percent decrease if the original amount is 
and the new amount is -5,304.
A. 5,408; 5,300% B. 5,408; 5,210% C. 5,408; 5,195% D. 5,408; 5,200%
Mathematics
Convert the other base number to base 10.23,7768
A. 158 B. 10,238 C. 200 D. 190,208
Mathematics
Find the exact value of the trigonometric expression without the use of a calculator.cos
A. - 
B. - 
C. - 
D. 
Mathematics
Solve.5x2 - 30x + 40 = 0
A. 0, 2, 4 B. -2, -4 C. 2, 4 D. 5, 2, 4
Mathematics