Answer:
r(t) and s(t) are parallel.
Step-by-step explanation:
Given that :
the  lines represented by the vector equations are:
r(t)=⟨1−t,3+2t,−3t⟩
s(t)=⟨2t,−3−4t,3+6t⟩
The objective is to determine if the following lines represented by the vector equations below intersect, are parallel, are skew, or are identical.
NOTE:
Two lines will be parallel if 
here; 

Thus;



∴

Hence, we can conclude that r(t) and s(t) are parallel.
 
        
             
        
        
        
Answer is 60 U need to calculate carefully with brackets involving multiplication
        
             
        
        
        
Answer:
x = 11
Step-by-step explanation:
3x - 7 = x + 15 ( subtract x from both sides )
2x - 7 = 15 ( add 7 to both sides )
2x = 22 ( divide both sides by 2 )
x = 11
 
        
                    
             
        
        
        
Answer:
<h2>
</h2><h2><u><em>
the equation is false</em></u></h2>
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Step-by-step explanation:
x - 10+ 9x = - 1 + 10x
-10 + 1 = -x - 9x + 10x
-9 = 0
the equation is false