Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
A. - 
- 
i
B. - 
+ 
i
C. - 
- 
i
D. 
+ 
i
Answer: A
Mathematics
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Use De Moivre's theorem to simplify the expression. Write the answer in the form a + bi.(cos 30° + i sin 30°)6
A. -1 B. i C. -i D. 1
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Solve the problem.Jay drove 256 kilometers at the average rate of 64 kilometers per hour. How long did the trip take?
A. 2 hours B. 3 hours C. 4 hours D. 5 hours
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Use the vectors in the figure below to graph the following vector. 
2u - z - w 
A. 
B. 
C. 
D. 
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Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 0.80x - 3.79 B. y = 0.95x - 2.79 C. y = 0.90x - 3.79 D. y = 0.85x - 2.79
Mathematics