12:15 does not belong, since that is a ratio of 4:5, whilst the others are all 3:4.
        
                    
             
        
        
        
Answer:
choice a
Step-by-step explanation:
angle 45 means, its a isosceles triangle.
so y = √3
x^2 = 3+3= 6
x = √6
 
        
             
        
        
        
Answer:
Well I think positive is to the right and negative is to the left
 
        
             
        
        
        
I’m not a true percent sure but I think it’s C