Find the length of the curve.x = 6et sin t, y = 6et cos t, 0 ? t ? 1
A. 6
(e - 1)
B. 6
e
C. 12(e - 1)
D. 
(e - 1)
Answer: A
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Solve the problem.A ship in the Atlantic Ocean measures its position to be 21°20' north latitude. Another ship is reported to be due north of the first ship at 43°21' north latitude. Approximately how far apart are the two ships? Round to the nearest mile. Assume that the radius of the Earth is 3960 miles.
A. 1522 mi B. 1536 mi C. 87,186 mi D. 87,200 mi
Solve the problem.One digit from the number 1,626,776 is written on each of seven cards. What is the probability of drawing a card that shows 1 or 7?
A. 
B. 
C. 
D. 
Determine whether the improper integral is convergent or divergent, and calculate its value if it is convergent.
Solve the equation by making an appropriate substitution.x2/5 - x1/5 - 12 = 0
A. {1024, -243} B. {-1024, 243} C. {-4, 3} D. {4, -3}