In three-dimensional geometry, skew lines are two lines that do not intersect and are not parallel. A simple example of a pair of skew lines is the pair of lines through opposite edges of a regular tetrahedron. Two lines that both lie in the same plane must either cross each other or be parallel, so skew lines can exist only in three or more dimensions. Two lines are skew if and only if they are not coplanar. Hope this helps!! :)
        
             
        
        
        
11. Multiply 6 by 2. Answer is 6. Because when you multiply 8 by 2 you get 16. 
12. Divide 24 by 4. You get 6. Now divide 42 by 6. The answer is 7.
P.S sorry if I'm wrong but I think I'm correct.
        
             
        
        
        
Answer: -101/18
Step-by-step explanation: I think, I don’t know
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Não porque a caixa seria muito menor que o cano.
 
        
             
        
        
        
Answer:
50
Step-by-step explanation:
2(3)^2+9(3)+5
2(9)+27+5
18+27+5
=50