Solve.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. 40 mph
B. 200 mph
C. 160 mph
D. 80 mph


Answer: A

Mathematics

You might also like to view...

Solve. Then graph the solution.x2 - 6x - 7 ? 0

A. (-?, -1]

B. [7, ?)

C. (-?, -1] ? [7, ?)

D. [-1, 7]

Mathematics

State the domain of the rational expression.

A. {x|x ? -1, x ? 1} B. {x|x ? 0, x ? -1} C. {x|x ? -1, x ? -4, x ? 1} D. All real numbers

Mathematics

Do the operation and express the answer in form. ?

What will be an ideal response?

Mathematics

Find the polar coordinates of the point. Express the angle in degrees and then in radians, using the smallest possible positive angle.(-5, 5)

A. (5, 30°), 
B. (5, 150°), 
C. (5, 120°), 
D. (5, 135°), 

Mathematics