Find the angle between u and v in radians.u = -9i + 2j - 8k, v = 5i + 9j - 9k
A. 1.30
B. 1.57
C. 0.27
D. 1.44
Answer: A
Mathematics
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Solve the problem.The function defined by 
gives the distance in feet that a car going approximately 
will skid in t seconds. Find the time it would take for the car to skid 
. Round to the nearest tenth.
A. 10.5 sec B. 9.3 sec C. 10.7 sec D. 10.3 sec
Mathematics
Determine whether the graph is a tree.
A. Yes B. No
Mathematics
Use synthetic division to find the quotient and remainder.(2x3 + 3x2 + 4x - 10) ÷ (x + 1)
A. 2x2 + 5x + 9 + 
B. 2x2 + 5x + 9 - 
C. 2x2 + x + 3 - 
D. 2x2 + x + 3 + 
Mathematics
If r is the radius of a sphere, then the ratio of the surface area of the sphere to the volume of the sphere is _______________ .
Fill in the blank(s) with the appropriate word(s).
Mathematics