The decimal form, which is equivalent to 3/4, is .75
Other fraction forms of 3/4, would be also 6/8, 9/12, 12/16, 15/20, 18/24, 21/28
        
                    
             
        
        
        
Step-by-step explanation:
step 1: how many dolphins 
there are 6 sharks
sharks to dolphins is 3 to 5
3 S to 5 D
we can divide 6 (amount of sharks known) by 3, to get what a ratio of 1 is
6 ÷ 3 = 2
so 2 sharks is = 1 part or ratio
now we can times by 5 to get a ratio of 5
5 × 2 = 10
there are 10 Dolphins 
Step 2: How many starfish
repeat the steps above but for the ratio 2: 7 where 2 is the Dolfin ratio and there are 10 dolphins
put in questions answer you got
 
        
                    
             
        
        
        
4 less than five times a number is -11:
5x - 4 = -11
        
             
        
        
        
The answer to the question is always.