Solve the problem.A motorcycle and a car leave an intersection at the same time. The motorcycle heads north at an average speed of 20 miles per hour, while the car heads east at an average speed of 48 miles per hour. Find an expression for their distance apart in miles at the end of t hours.
A. 52t miles
B. 2t
miles
C. 52
miles
D. t
miles
Answer: A
Mathematics
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Find the Jacobian 
or 
(as appropriate) using the given equations.
A. 5760v B. 7200u C. 7200v D. 5760u
Mathematics
Evaluate the integral by making a substitution and then using a table of integrals. 
A. 9 sin-1
- 
+ C
B. 9 sin-1
- 
+ C
C. 
- 3 ln
+ C
D. 9 sin-1
+ x
+ C
Mathematics
Decide whether the argument is an example of inductive or deductive reasoning.17 + 11 = 28, 41 + 23 = 64, 11 + 13 = 24. Therefore, the sum of two prime numbers is even.
A. Deductive B. Inductive
Mathematics
Find the present value. Round to the nearest cent.
A. $4,741.09 B. $4,697.01 C. $17,244.93 D. $4,302.99
Mathematics