Provide an appropriate response.Write 2-4 using a positive exponent.
A. 
B. 
-4
C. 
D. 24
Answer: A
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The vector r(t) is the position vector of a particle at time t. Find the angle between the velocity and the acceleration vectors at time t = 0.r(t) = sin-1(3t)i + ln(5t2 + 1)j + 
k
A. 
B. 0
C. 
D. 
Solve the problem.One maid can clean the house in 3 hours. Another maid can do the job in 4 hours. How long will it take them to do the job working together?
A. 
hr
B. 1
hr
C. 
hr
D. 12 hr
Solve the problem.The gravitational attraction A between two masses varies inversely with the square of the distance between them. If the force of attraction is 9 lb when the masses are 2 ft apart, what is the attraction when the masses are 6 ft apart?
A. 2 lb B. 4 lb C. 3 lb D. 1 lb
Find the domain of the given function.f(x) = 
A. 
B. 
C. 
D. (-?, ?)