Solve the problem.A barge takes 4 hours to move (at a constant rate) downstream for 32 miles, helped by a current of 2 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. 64 hr
B. 8 hr
C. 6 hr
D. 4 hr
Answer: B
Mathematics
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A. 0 B. 1 C. 8 D. Does not exist
Mathematics
Find an equation of the tangent to the curve at the point corresponding to the given value of the parameter.
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Mathematics
Use a proportion to solve the problem.The ratio of the height to the width of a packaging label is 5 to 19. If the height of the label is 4 inches, what is its width?
A. 9 inches B. 23 inches C. 15.2 inches D. 1.1 inch(es)
Mathematics
Find the x- and y-intercepts of the graph of the equation. y = x2 + 15x + 54
A. x-intercepts: 9, 6; y-intercept: 54 B. x-intercept: 54; y-intercepts: 9, 6 C. x-intercept: 54; y-intercepts: -9, -6 D. x-intercepts: -9, -6; y-intercept: 54
Mathematics