Determine speed of the water currents
John can run the boat in still water at the speed of 15 miles per hour. If he can go 12 miles downstream in same time as it takes him to go nine miles upstream, then determine speed of the water currents?
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The yield of chemical procedure is being studied. The past five days of plant operation have resulted in following percent yields: 91.6, 88.75, 90.8, 89.95, and 91.3. Determine the point estimate of the mean yield.
Its distance in feet above ground after t seconds is provided by s(t)=16t^2+64t+80. How many seconds it will take to reach ground level?
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If he can go 12 miles downstream in same time as it takes him to go nine miles upstream, then determine speed of the water currents?
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The plane flies 440 miles with wind and 320 miles against wind in same length of time. If speed of wind is 30 mph, Compute speed of plane in still air?
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