Solve the problem.Julie and Eric row their boat (at a constant speed) 24 miles downstream for 4 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 6 hours. Find the rate of the current.
A. 0.5 mph
B. 1 mph
C. 5 mph
D. 2 mph
Answer: B
Mathematics
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Add or subtract the rational expressions. Reduce to simplest terms.
- 
A. 
B. 
C. 
D. 6
Mathematics
Find an equation for the conic that satisfies the given conditions.
ellipse, foci (±1,6), length of major axis 8
Mathematics
Simplify the expression.
A. 
B. 1
C. 
D. 
Mathematics
Use the four-step procedure to solve the variation problem.A person's hair length varies directly as the number of weeks it has been growing. If Fred shaved his head bald and his hair was 0.28 inches long after 7 weeks, how long would it be after an additional 6 weeks? Round to the nearest hundredth of an inch.
A. 1.50 inches B. 0.24 inch C. 3.25 inches D. 0.52 inch
Mathematics