22.25
 multiply them by each other and you will get your answer 22.25
        
                    
             
        
        
        
Answer:
y= 3/5x
Step-by-step explanation:
 
        
                    
             
        
        
        
The Tama monorail runs for 18 hours every day.
        
             
        
        
        
Ni : Zn: Cu = 7:2:9 =7x : 2x : 9x
7x+2x+9x = 3.8
18x=3.8
x=3.8/18=1.9/9≈0.21
Ni:   7x=7*0.21=1.47 ≈1.5 kg
Zn:  2x=2*0.21=0.42≈0.4 kg
Cu: 9x=9*0.21=1.89 ≈1.9 kg
Check 1.5+0.4+1.9 =3.8 True
        
             
        
        
        
Answer:
520 miles
Step-by-step explanation: