Solve the problem.A cyclist bikes at a constant speed for 20 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 25 miles. Find his speed.
A. 7 mph
B. 4 mph
C. 5 mph
D. 6 mph
Answer: C
Mathematics
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Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 2, u '(1) = -6, v(1) = 6, v '(1) = -3.
(3v - u) at x = 1
A. -3 B. 20 C. 16 D. -15
Mathematics
Solve the problem.A tank contains 1
gallons of water. Its capacity is 
How much more water is needed to fill it?
A. 
gal
B. 
gal
C. 4
gal
D. 6
gal
Mathematics
Use the formula for 
to evaluate the expression.
A. 990 B. 165 C. 6,652,800 D. 13,305,600
Mathematics
Solve the problem.The period of a pendulum, in seconds, is given by the formula 2? 
, where L is the length of the pendulum. Rewrite the formula, by rationalizing the denominator.
A. P = 
B. P = 
C. P = 2? 
D. P = 
Mathematics