Nothing except when it has been polluted
        
                    
             
        
        
        
16
Because...
4 cats/ 5dogs = x cats/ 20 dogs
Therefore you can conclude it is 16 cats in total
        
                    
             
        
        
        
Answer:
a) Acute
Step-by-step explanation:
    To clasify the triangle as Acute, Right, or Obtuse, we use the converse of the pythagorean theorem and see if c^2 is greater, less than, or equal to b^2+a^2. 
So 16^2 ? 11^2 + 12^2
Since 11^2 +12^2 = 265 and 16^2 is 256, c^2 is less than b^2+a^2. So the triangle is acute.
 
        
                    
             
        
        
        
Lets w width, l length, y amount add, A area, P perimeter
A=lw=(3+y)(2)=6+2y ft²
p= 2l+2w= 2(3+y)+2(2)= 6+2y+4 =10+2y
        
             
        
        
        
Answer:
its either 3.111111
or 27+1
        9
Step-by-step explanation: