Solve.A cruise boat travels at its top speed 48 miles downstream in 4 hours and returns to its starting point upstream, also at its top speed, in 6 hours. Find the speed of the stream.
A. 22 mph
B. 12 mph
C. 10 mph
D. 2 mph
Answer: D
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Solve the problem.If the life, in months, of a certain type of car battery is normally distributed with a mean of 86 months and a standard deviation of 8 months, what should be the guarantee period if the company wants less than 5% of the batteries to fail while under warranty?
A. Less than 99.2 months B. Less than 17.74 months C. Less than 72.8 months D. Less than 65.36 months
Find the relative extrema of the function. Find the relative extrema of trigonometric functions on [0, 2? ]. List your answers in terms of ordered pairs. Then sketch a graph of the function.
Solve the problem.Find the volume V of a right circular cylinder with radius 9 in and height 16 in.
A. V = 144? in3 B. V = 72? in3 C. V = 1296? in3 D. V = 324? in3
Given the values of x and y, find an equation of variation in which y varies directly as x.y = 20.72, when x = 5.6
A. y = 3.7x B. x = 3.7y C. y = 5.6x D. y = 0.27x