Solve the problem.A plane makes a 240-mile trip against a head wind in 1 hour and 30 minutes and returns, with a tail wind of the same speed, in 1 hour. What is the speed of the wind?
A. 200 mph
B. 40 mph
C. 80 mph
D. 160 mph
Answer: B
Mathematics
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Evaluate the integral.
A. ln 
+ C
B. 
ln 
+ C
C. 
csch2 7x + C
D. 7 ln 
+ C
Mathematics
Name the property used to go from step to step indicated by an a), b), c), or d).
What will be an ideal response?
Mathematics
Solve the problem.Suppose that there is no straight path for driving between towns A and B. To drive from Town A to Town B, it is necessary to travel due east for 21 miles, then due north for 18 miles. How far apart, to the nearest tenth of a mile, are the towns?
A. 345.0 mi B. 27.7 mi C. 6.2 mi D. 459.0 mi
Mathematics
Complete the table. Round to the nearest whole number, when necessary.
A. 16 B. 40 C. 45 D. 32
Mathematics