12%
40% = 0.4 
30 = 0.3
0.3 x 0.4 = 0.12
0.12 = 12%
        
             
        
        
        
Answer:
Answer is D. 
30
Step-by-step explanation:
 all angles add up to 180(applys to triangles) 
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
Parallel lines have the same slope. The slope of the given line is 3/4. Line B has the same slope.
 
        
                    
             
        
        
        
The answer is 345 because you are suppose to multiply then add them togther