Perform the indicated operation(s), whenever possible.Let A = 
and B = 
. Find A - B.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (9t - 3t3)i + 3tan(3t)j + e5tk
A. a
= 
?i + 108j + 25e5/12?k
B. a
= - 
?i - 108j + 25k
C. a
= - 
?i + 108j + 25e5/12?k
D. a
= - 
?i - 108j + 25e5/12?k
Mathematics
Evaluate.Find (f ? g)(4) given f(x) = x2 - 4x - 45 and g(x) = 25 - x2.
A. -450 B. -405 C. -404 D. -36
Mathematics
Translate the ellipse with the given equation so that it is centered at the given point. Find the new equation and sketch its graph.
+ 
= 1; (-3, 4)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Evaluate -(-x) for the given value of x.x = - 
A. 
B. -49
C. 49
D. - 
Mathematics