Find a value of k that will make f a probability density function on the indicated interval.f(x) = kx; [0, 6]
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Express the vector as a product of its length and direction.6j
A. 6(6j)
B. 
j
C. 6
D. 6j
Mathematics
Solve the problem.A ball is dropped from a height of 18 m and always rebounds 
of the height of the previous drop. How far does it travel (up and down) before coming to rest?
A. 90 m B. 36 m C. 108 m D. 54 m
Mathematics
Change the given polar coordinates (r, ?) to rectangular coordinates (x, y).
A. 
B. 
C. 
D. 
Mathematics
The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = 9t - t2, 0 ? t ? 9Find the body's speed and acceleration at the end of the time interval.
A. 9 m/sec, -18 m/sec2 B. 9 m/sec, - 2 m/sec2 C. 27 m/sec, -18 m/sec2 D. -9 m/sec, - 2 m/sec2
Mathematics