Y = 12% = 0.12
y = 100(0.05) + x(0.2) / 100 + x
0.12 = 5 + 0.2x / 100 + x
0.12( 100 + x ) = 5 + 0.2x
12 + 0.12x = 5 + 0.2x
7 = 0.08x
x = 87.5
hope this help
        
                    
             
        
        
        
Answer:
to get the probability you add the number of figure all together 
divide the number of spheres with the total 
ie 
2 ÷ 10 
you get 1÷ 5 
you get the answer as 0.2
 
        
             
        
        
        
They are both equivalent to 1, so they are equal. 
        
             
        
        
        
Across the largest side is going to be largest angle, and across the smallest side -smallest angle.
Sides:
 BC = 9 < AB = 13 < CA = 17.
Angles that are across sides: A < C < B.
Answer is d- A C B.