Solve the equation for all complex solutions, giving exact forms in your solution set.x3 + 27 = 0
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.Find the half-life of the radioactive element radium, assuming that its decay constant is 
with time measured in years.
A. 1400 years B. 1600 years C. 800 years D. 2308 years
Mathematics
Refer to the weighted voting system 
and the Banzhaf definition of power. (The four players are P1, P2, P3 and P4.)The number of losing coalitions is
A. 1. B. 4. C. 14. D. 11. E. none of these
Mathematics
Solve.-9 ? -2c + 1 < -7
A. (-5, -4] B. [4, 5) C. (4, 5] D. [-5, -4)
Mathematics
Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).3
A. 3(cos 90° + i sin 90°) B. 3(cos 0° + i sin 0°) C. 3(cos 180° + i sin 180°) D. 3(cos 270° + i sin 270°)
Mathematics