Solve the problem.Find a unit vector perpendicular to plane PQR determined by the points 
and 
A. ± 
B. ± 
C. ± 
D. ± 
Answer: D
Mathematics
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Which of the following shows the distance and the midpoint for the points: 
? Round the distance to the nearest whole number.
?
A.
d = 9, Midpoint = 
B.
d = 6, Midpoint = 
C.
d = 6, Midpoint = 
D.
d = 41, Midpoint = 
E.
d = 41, Midpoint = 
Mathematics
Solve the quadratic inequality. Write your answer in interval notation.x2 - 3x - 18 ? 0
A. (-?, -3] B. [6, ?) C. [-3, 6] D. (-?, -3] ? [6, ?)
Mathematics
Find the exact value by using a sum or difference identity.tan(- 15°)
A. 
- 2
B. - 
+ 2
C. 
D. 
Mathematics
Find the slope of the line.y = 3x + 2
A. - 
B. 3
C. 2
D. 
Mathematics