Find the missing number or expression in the pair of equivalent fractions. Assume that all denominators are nonzero.
Mathematics
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Evaluate the integral by using multiple substitutions.
dx
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Mathematics
Find the derivative of the function.y = 9 ln sin2 8x
A. 
B. 144 cot 8x
C. 16 tan 8x
D. 
Mathematics
Solve the problem.A fire is sighted due west of lookout A. The bearing of the fire from lookout B, 14.1 miles due south of A, is N 32°57'W. How far is the fire from B (to the nearest tenth of a mile)?
A. 17.8 mi B. 19.8 mi C. 16.8 mi D. 18.8 mi
Mathematics
Solve the problem.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 80 mph B. 20 mph C. 50 mph D. 40 mph
Mathematics