The answer is (32/100)-(8/25 )
        
                    
             
        
        
        
Alright, lets get started.
Suppose total number of dancers in school = x 
We have given in question, 42 % of total dancers are ballet dancers.
So, we could find number of ballet dancers by finding 42 % of total dancers.
Number of ballet dancers = x * 42 %
Number of ballet dancers = x * 42/100 = 0.42 x
As per given in question, there are 63 ballet dancers in school.
Which means 0.42 x = 63
Dividing 0.42 from both sides
0.42 x / 0.42 = 63 / 0.42
x = 150
Hence number of total dancers in school = 150 : Answer
Hope it will help :)
 
        
             
        
        
        
Answer:
1 & 2 = Right Triangles
3 & 4 = Not Right Triangles
Step-by-step explanation:
Solved Using Pythagorean Theorem:
1)  = 225
 = 225 
 = 225
 = 225
2)  = 1521
 = 1521 
 = 1521
 = 1521
3)  = 776
 = 776 
 = 784
 = 784
4)  = 244
 = 244
  = 256
 = 256