Use De Moivre's theorem to simplify the expression. Write the answer in the form a + bi.
4
A. -4
B. -4i
C. 4i
D. 4
Answer: A
Mathematics
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Find the length of the curve.x = 
t2, y = 
(4t + 4) 3/2, 0 ? t ? 1
A. 5
B. 3
C. 
D. 
Mathematics
The temperature in degrees Fahrenheit can be estimated from the number of cricket chirps per minute. If a cricket chirps 40 times per minute, the temperature is approximately 50 degrees Fahrenheit. The average rate of change in temperature is 0.25 degree per chirp per minute. Use these facts to estimate the temperature when a cricket chirps 53 times per minute. ?
A. 53.25 degrees B. 57 degrees C. 40.25 degrees D. none of the above
Mathematics
Find the absolute value.-
A. 24.1 B. -24.1 C. 48.2 D. 0
Mathematics
Graph the function.y = -4 sin 
- 2
A. 
B. 
C. 
D. 
Mathematics