Solve the problem.A plane flies 420 miles with the wind and 300 miles against the wind in the same length of time. If the speed of the wind is 25 mph, what is the speed of the plane in still air?
A. 140 mph
B. 150 mph
C. 155 mph
D. 175 mph
Answer: B
Mathematics
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Solve the problem.How many 5-card poker hands consisting of 2 aces and 3 kings are possible with an ordinary 52-card deck?
A. 24 B. 12 C. 288 D. 6
Mathematics
Find an expression equivalent to the given expression.
sinh x5
A. (5x4) cosh x5 B. (-5x4) cosh x5 C. (5x4) sinh x5 D. cosh x5
Mathematics
Add.36 + 12
A. 93 B. 57 C. 48 D. 84
Mathematics
Find the Jacobian of f (x, y) = 
and g (x, y) = cos 
What will be an ideal response?
Mathematics