Simplify the expression. Assume that all variables are positive.
A. t2z
B. tz2
C. 
D. 
Answer: C
Mathematics
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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) = (6t2 + 2)i + (5t3 - 8t)k
A. ?
B. 0
C. 
D. 
Mathematics
Solve.27 = 6 + x
A. 11 B. 31 C. 27 D. 21
Mathematics
Find the area.
A. 23 m2
B. 9
m2
C. 11
m2
D. 19
m2
Mathematics
Graph the polar equation.r = 
A. 
B. 
C. 
D. 
Mathematics