Let's set the first angle as x, the second angle is then 4x, and the third angle is (x+4x)+15, which is 5x+15
the three angles make a sum of 180: x+4x +5x+15=180
10x=165
x=16.5
the second angle is 4x=4*16.5=66
        
             
        
        
        
Answer:
X could equal 1, 2, 3, 6, 9, or 18
Step-by-step explanation:
Natural numbers include all whole numbers. (1,2,3,..etc)
 
        
             
        
        
        
Answer:
0.5
Step-by-step explanation:
just divide 1 by half
 
        
                    
             
        
        
        
If you use the pothaorian theorym (A squared + B squared= C squared) youll be able to figure out the right answer is 65.