<u>Answer-</u>
<em>The lines are two </em><em>coinciding lines</em><em> or the </em><em>same lines</em><em>.</em>
<u>Solution-</u>
The given line equations are 
the first one,
 
  
the second one,
 
 
As we know two line equations  and
 and  will be,
 will be,
- Parallel if,  
- Coincide if,  
- Intersect if,  
As here, 


(C₁ and C₂ aren't considered as they are 0)
Therefore, the lines are two coinciding lines or the same lines.
 
        
             
        
        
        
Answer:
volume of cyclinder=πr²h
                                =3.14×2²×3=37.68cm³
rectangular prism volume=6×5×7
                                           =210cm³
total volume=37.68+210=247.68cm³
 
        
                    
             
        
        
        
Answer:
 verb tense refers to when the action and a sentence takes place - whether it happened in the past, is happening in the present, or what is happening in the future. 
 
        
             
        
        
        
Answer:
-10/3 is the answer
Step-by-step explanation:
Given are two complex numbers as

Recall Demoivre theorem as
(cosA+isinA)(cos A+isin B) = cos(A+B)+isin(A+B)
Hence here we have sum of angles  as
A+B = 63+117 =180

=
Since sin180=0 and cos 180=-1