Solve.The speed of a vehicle is inversely proportional to the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 45 miles per hour in 50 minutes, how fast must it travel to cover the same distance in 15 minutes?
A. 
miles per hour
B. 
miles per hour
C. 150 miles per hour
D. 
miles per hour
Answer: C
Mathematics
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Solve the problem.The physics department of a college has 7 male professors, 10 female professors, 14 male teaching assistants, and 9 female teaching assistants. If a person is selected at random from the group, find the probability that the selected person is a teaching assistant or a female.
A. 
B. 
C. 
D. 
Mathematics
Find the angle in degrees when given the trigonometric values. ? represents the unknown angle measure.sec ? = 8.45
A. 83.0° B. 83.00° C. 83.2° D. 83.20°
Mathematics
Find the length of the curve.x = 2 sin t + 2t, y = 2cos t, 0 ? t ? ?
A. 8 B. 12 C. 2? D. 4
Mathematics
Expand the expression.log4 (9x)
A. log4 9 + log4 x B. log4 9 - log4 x C. log2 9 - log2 x D. log2 9 + log2 x
Mathematics