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) = e2ti + (5 + e-2t)j + (3 cos 9t)k
A. 
B. 
C. 0
D. 
Answer: B
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Provide an appropriate response.Is it possible for the x-intercept and the y-intercept of a straight line to be at the same point? Explain your answer.
What will be an ideal response?
Factor.72x7y9 + 60x5y5 + 36x2y2
A. 12(6x7y9 + 5x5y5 + 3x2y2) B. No common factor C. 12x2(6x5y9 + 5x3y5 + 3y2) D. 12x2y2(6x5y7 + 5x3y3 + 3)
The graph of the given function is drawn with a solid line. The graph of a function, g(x), transformed from this one is drawn with a dashed line. Find a formula for g(x).f(x) = x2
A. g(x) = (x + 3)2 + 4 B. g(x) = - 2(x + 3)2 + 4 C. g(x) = 2(x - 3)2 - 4 D. g(x) = - 2(x + 3)2
Evaluate the following expression. ? (sin2x - sin4x) cos x ?
A. cos4x sin2x B. cos2x sin2x C. cos2x sin6x D. cos3x sin2x E. cos x sin x