Solve the problem.A twin-engined aircraft can fly 720 miles from city A to city B in 4 hours with the wind and make the return trip in 6 hours against the wind. What is the speed of the wind?
A. 45 mph
B. 60 mph
C. 15 mph
D. 30 mph
Answer: D
Mathematics
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Determine whether or not the points are vertices of the given geometric figure.(-7, -1), (2, -10), (16, -3), and (7, 8); square
A. Yes B. No
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Determine whether the improper integral converges or diverges.
A. Diverges B. Converges
Mathematics
Simplify the radical expression. Assume that all variables represent positive real numbers.
A. 
B. 
C. x9
D. 9x9
Mathematics
Fill in the blank with one of the words or phrases listed below. Choices may be used more than once or not at all.
The form Ax + By = C is called the 
form.
A. standard B. slope C. slope-intercept D. point-slope
Mathematics