Solve the problem.The speed of a stream is 5 mph. If a boat travels 62 mi downstream in the same time that it takes to travel 31 mi upstream, what is the speed of the boat in still water?
A. 10 mph
B. 17 mph
C. 18 mph
D. 15 mph
Answer: D
Mathematics
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Graph the polynomial in the given viewing rectangle.
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by 
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(a) From the graph, find the coordinates of all local maxima.
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(b) From the graph, find the coordinates of all local minima.
What will be an ideal response?
Mathematics
Complete the factoring.5x2 - 20x = 5x( )
A. 4 - x B. x2 - 4 C. x - 4 D. 4 - x2
Mathematics
Convert as indicated.4200 L to kiloliters
A. 42 kl B. 4.2 kl C. 4,200,000 kl D. 420,000 kl
Mathematics
Solve the problem.Suppose that P(A) = 0.3, P(B) = 0.42, and P(A ? B) = 0.61, find P(A ? B).
A. 0.11 B. 0.72 C. 0.5 D. 0.126
Mathematics