Calculate the direction of 
and the midpoint of line segment P1P2.P1(4, -8, 7) and P2(5, -7, 6)
A. 
i + 
j - 
k; 
B. 
i + 
j - 
k; 
C. 
i + 
j - 
k; 
D. 
i + 
j + 
k; 
Answer: C
Mathematics
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= 
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? 2
A. 74
B. 3
C. 14
D. 14
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A. {(-8, -5)} B. {(8, -5)} C. {(-8, 5)} D. {(8, 5)}
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A. 468 B. 213 C. 44 D. 183
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