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) = (6t2 + 2)i + (5t3 - 8t)k
A. ?
B. 0
C. 
D. 
Answer: D
Mathematics
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Find all cube roots of the complex number. Leave answers in trigonometric form.125
A. 5 cis 90°, 5 cis 210°, 5 cis 330° B. 5 cis 0°, 5 cis 60°, 5 cis 120° C. 5 cis 45°, 5 cis 165°, 5 cis 325° D. 5 cis 0°, 5 cis 120°, 5 cis 240°
Mathematics
Write the ratio in lowest terms.55 meters to 75 meters
A. 
B. 
C. 
D. 
Mathematics
Find the domain and range of the relation.{(4,4), (-7,2), (6,-8), (3,3)}
A. D = {4, -7, 3, 6}; R = {4, 4, 2, 3, -8} B. D = {4, -7, 3, 6}; R = {4, 2, 3, -8} C. D = {4, 2, 3, -8}; R = {4, -7, 3, 6} D. D = {4, -7, 3, 6}; R = {4, -4, 2, 3, -8}
Mathematics
Graph the inequality.y > - 
x + 3
A. 
B. 
C. 
D. 
Mathematics