Answer:
20
Step-by-step explanation:
Line m and n are parallel lines cut by the transversal (without name). So, angles with measures  and
 and  are corresponding angles.
 are corresponding angles.
The Corresponding Angles Theorem states if two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent.
Hence,

 
        
             
        
        
        
Answer:
the first 1
Step-by-step explanation:
 
        
             
        
        
        
Answer:
<h2>100</h2>
Step-by-step explanation:
BIDMAS
do the bracket first
50+20=70
70+30=100
 
        
             
        
        
        
Answer:graph a  
Step-by-step explanation:
bc if you subtract 3 
from 2 you find the one you line your numbers up with