Solve the problem and answer the question.A barge takes 4 hours to move (at a constant rate) downstream for 40 miles, helped by a current of 3 miles per hour. If the barge's engines are set at the same pace, find the time of its return trip against the current.

A. 10 hr
B. 80 hr
C. 7 hr
D. 4 hr


Answer: A

Mathematics

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Solve the problem.The radius r and height h of a cylinder are changing with time. At the instant in question,    and  At what rate is the cylinder's volume changing at that instant?

A. 0.13 cm3/sec B. -0.06 cm3/sec C. 0.25 cm3/sec D. 1.01 cm3/sec

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A sequenceis defined recursively by the equation for n?3 where =14, = 14.

Use your calculator to guess the limit of the sequence. Select the correct answer. a. 6 b. 14 c. 26 d. 17 e. 15

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Give a number that satisfies the given condition.A number between -10 and 10 that is a real number but not not an integer

What will be an ideal response?

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Determine the number that will complete the square to solve the equation after the constant term has been written on the right side. Do not actually solve.w2 - 8w - 10 = 0

A. 16 B. 0 C. -4 D. 25

Mathematics