Solve the problem.A plane flies 420 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 22 mph, what is the speed of the plane in still air?
A. 232 mph
B. 242 mph
C. 247 mph
D. 267 mph
Answer: B
Mathematics
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Find the limit of the sequence if it converges; otherwise indicate divergence.an = 
A. 
B. 1
C. - 
D. Diverges
Mathematics
Solve the problem.Sven can type 59 words per minute. How many words would he type in 
hour (15 minutes)?
A. 236 words B. 221 words C. 15 words D. 885 words
Mathematics
Find the foci of the given hyperbola.x2 - y2 = 8
A. (
, 0), (-
, 0)
B. (4, 0), (-4, 0)
C. (0, 4), (0, -4)
D. (2, 0), (-2, 0)
Mathematics
Add or subtract by first simplifying each radical and then combining any like radicals. Assume that all variables represent positive numbers.
- 6
- 6
A. -35x
B. -12x
C. -12x
D. -35x
Mathematics