Find average speed of boat and stream
The boat goes upstream 30 miles and downstream 44 miles in ten hours. Next day it goes upstream 40 miles and downstream 55 miles in 13 hours. Find average speed of boat and stream?
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Fernando's rate on side roads is 9 mi/h faster than the rate on freeway. Write the equation to represent the problem, and then determine Fernando's rate on side roads.
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In economics, of all new products put upon market, 90% fail and are taken off the market in three years. Using normal approximation for this binomial distribution without correction for continuity; if a store introduces 70 new products, what is th
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Find expected number of hours until he or she will first count exactly nine trains during an hour which commences on hour?
Let X be serial number of trial on which chocolate is found. (i) Determine probability function of X. (ii) Determine expectation of X?
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