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) = sin-1(3t)i + ln(5t2 + 1)j + 
k
A. 
B. 0
C. 
D. 
Answer: D
Mathematics
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Find the product.(2 - 5
)2
A. 4 + 25
B. 129 + 20
C. 129 - 20
D. 4 - 25
Mathematics
Find area of figure. Round to the nearest hundredth if necessary.Find the area of a rectangle measuring 5.8 yd by 21.41 yd.
A. 33.64 yd2 B. 248.356 yd2 C. 124.178 yd2 D. 27.21 yd2
Mathematics
Use the Intermediate Value Theorem to determine whether the polynomial function has a zero in the given interval.f(x) = 2x3 - 4x - 9; [2, 3]
A. f(2) = -1 and f(3) = 33; yes B. f(2) = 1 and f(3) = -33; yes C. f(2) = 1 and f(3) = 33; no D. f(2) = -1 and f(3) = -33; no
Mathematics
Choose the equivalent expression for the given expression.sin2x
A. cos2x - 1 B. 1 - cos2x C. 1 + cos2x D. 1 - csc2x
Mathematics