Solve the problem.From a point on a straight road, John and Fred ride bicycles in opposite directions. John rides 10 miles per hour and Fred rides 8 miles per hour. In how many hours will they be 54 miles apart?
A. 4 hours
B. 3 hours
C. 2 hours
D. Not enough information
Answer: B
Mathematics
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Solve the problem.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 9 m down from the top of the dome the ceiling is 19 m wide, find the best location for the light source. Round to one decimal place if necessary.
A. 5 m down from the top B. 2.5 m down from the top C. 10 m down from the top D. 7.5 m down from the top
Mathematics
Use the Root Test to determine if the series converges or diverges.
A. Diverges B. Converges
Mathematics
Find the standard form of the equation of the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Graph the function.y = -cot x
A. 
B. 
C. 
D. 
Mathematics