Solve.The amount of time it takes a swimmer to swim a race is inversely proportional to the average speed of the swimmer. A swimmer finishes a race in 50 seconds with an average speed of 3 feet per second. Find the average speed of the swimmer if it takes 25 seconds to finish the race.
A. 8 feet per second
B. 5 feet per second
C. 7 feet per second
D. 6 feet per second
Answer: D
Mathematics
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Evaluate.Let a = 
, b = 
. Find a + b.
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation.
A. 400 B. 40 C. 0.0025 D. 25
Mathematics
Solve.|x| = -5
A. {5} B. ? C. {5, -5} D. {-5}
Mathematics
Approximate the number rounded to three decimal places, and truncated to three decimal places.1.14285714
A. 1.142 1.143 B. 1.143 1.143 C. 1.143 1.142 D. 1.144 1.142
Mathematics