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. 200 mph
B. 160 mph
C. 80 mph
D. 40 mph
Answer: D
Mathematics
You might also like to view...
Make a truth table for the given statement. The letters p, q, r, s represent propositions.q and (not r) and s
A. 
B. 
C. 
D. 
Mathematics
Solve the problem by estimating.As part of her preparation for soccer tryouts, Francine did 73 jumping jacks each day for 68 days. Estimate how many jumping jacks she did during that period. Round the number of jumping jacks and the number of days to the to the nearest ten.
A. 13,000 B. 4900 C. 1300 D. 49,000
Mathematics
Find the reference angle of the given angle.-244°
A. 116° B. 64° C. 154° D. 26°
Mathematics
The function f is one-to-one. Find its inverse.f(x) = (x + 5)3
A. f-1(x) = 
- 5
B. f-1(x) = 
+ 5
C. f-1(x) = 
- 125
D. f-1(x) = 
- 5
Mathematics