Solve the problem.A boat goes 640 miles downstream in the same time it can go 560 miles upstream. The speed of the current is 6 miles per hour. Find the speed of the boat in still water.
A. 84 mph
B. 96 mph
C. 90 mph
D. 120 mph
Answer: C
Mathematics
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Find the x- and y-intercepts. If no x-intercepts exist, state so.f(x) = -x2 - 6x - 10
A. 
, (0, -10)
B. No x-intercepts, (0, -10)
C. 
, (0, 10)
D. No x-intercepts, (0, 10)
Mathematics
Solve the problem.If two cards are drawn without replacement from a deck, find the probability that the second card is an ace, given that the first card was an ace.
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.
A. 4x
B. x 
C. 
D. 
Mathematics
Factor. Check by multiplying.5s + 25 + 10t
A. 10(s + 5 + t) B. 5(s + 5 + 2t) C. 5(s + 25 + 10t) D. 5(s + 25 + 2t)
Mathematics