Ratios are the quantitative relation between two amounts showing the number of times one value contains or is contained within the other. 
 Equivalent ratios are like equivalent fractions, if they are the same value they are equivalent. 
 For example, to find two ratios that are equal to 1:7, first write 1:7 as the fraction 1/7.
        
             
        
        
        
True, volume is a tree dimensional measure.
        
             
        
        
        
Answer:
0.14
0.29
0.21
0.27
18.38
0.83
Step-by-step explanation:
 
        
                    
             
        
        
        
Y ≤ 7
You add 2 on both sides
        
                    
             
        
        
        
The answer to your question is 18, how 20\100x90=18