Answer:
45
Step-by-step explanation:
The sum of interior angles in a triangle is equal to 180
2x - 12 + 2x + 17 + 9x - 7 = 180 add like terms
13x - 2 = 180 add 2 to both sides
13x = 182 divide both side by 13
x = 14 
m<X = 2x + 17 replace x with 14
2*14 + 17 = 45
 
        
             
        
        
        
I believe the answer is the second answer
        
                    
             
        
        
        
Answer:
17
Step-by-step explanation:
it has to be under 90 degrees
 
        
             
        
        
        
Answer:
21245489
Step-by-step explanation:
231
1
1
6
6
6456464163