Solve.In the study of alternating electric current, capacitive voltage is given by 
, where f is the number of cycles per second, i is the maximum current, and t is the time in seconds. Solve the equation for t.
A. t = 2?f cos 
B. t = 
arccos 
C. t = 2?f arccos 
D. t = 
arccos 
Answer: D
Mathematics
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Solve the equation.8 ln 6x = 56
A. 
B. 
C. {e7}
D. 
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Subtract. Write a mixed numeral for the answer.
A. 22
B. 21
C. 21
D. 22
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Solve the problem.A man rode a bicycle for 12 miles and hiked an additional 8 miles. The total time for the trip was 5 hours. If his bicycling rate was 10 miles per hour faster than his hiking rate, then what was his hiking rate?
A. 1 mph B. 3 mph C. 4 mph D. 2 mph
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Determine whether the improper integral is convergent or divergent.
A. Convergent B. Divergent
Mathematics