Find the dot product v ? w.v = -12i - 15j,
w = -5i - 8j
A. 120
B. 180
C. 60
D. -60
Answer: B
Mathematics
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Solve the problem.The positions of two particles on the s-axis are s1 = sin t and 
with s1 and s2 in meters and t in seconds.At what time(s) in the interval 0 ? t ? 2? do the particles meet?
A. t = 
? sec and t = 
? sec
B. t = 
? sec and t = 
? sec
C. t = ? sec and t = 2? sec
D. t = 
? sec and t = 
? sec
Mathematics
Determine whether the relation is a function.
A. Not a function B. Function
Mathematics
Find the median of the set of data.93, 88, 218, 101, 281, 239, 234
A. 234 B. 179 C. 101 D. 218
Mathematics
Solve by completing the square.x2 + 4x = 3
A. -1 ± 
B. -2 ± 
C. 2 + 
D. -2 ± 2
Mathematics