In the question we are given three lines L,M and N such that: 
Line L is perpendicular to M
and line L is parallel to line N
so the option is (C) M is perpendicular N
Step-by-step explanation
We are given three lines L,M and N such that:
-  Line L is perpendicular to M
-  Line L is parallel to line N
<u>We know that when one line parallel to the second line and is perpendicular to the third line then the second line is also perpendicular to the third line.</u>
<u></u>
So,the answer is  (C) M is perpendicular N
 
        
             
        
        
        
Answer:
B. 50°
Step-by-step explanation:
∠PLM+ ∠PML =60+70 =130°
So, ∠MPL = 180°-130°=50°
According to the opposite angle theorem,
∠ KPN = ∠MPL which is 50°
 
        
             
        
        
        
Answer: 16
Step-by-step explanation:
-24-64 / (-1.6)
-24-64 / (-8/5)
-24 + 64 x 5/8
-24 + 8 x 5
-24 + 40
= 16
 
        
             
        
        
        
Answer: 8 days 
Step-by-step explanation:
6 miles has been paved already. 
Number of miles left = 30 - 6
= 24 miles
If they are paving at 3 miles a day, the days they will take to finish is:
= 24/3
= 8 days 
 
        
                    
             
        
        
        
Answer:
15+2a
Step-by-step explanation:
7+a+8+a=15+2a