Answer:
4/5 
Step-by-step explanation:
16/20 in a simpler form is 8/10. 8/10 in the simplest form is 4/5 (division)
 
        
                    
             
        
        
        
Answer: 4%-16000 and 9.5%-30000
Why:
1) x+y=46000
x=46000-y
2) 4%x+9,5%y=3490;
4x + 9.5y=349000; so 4*(46000-y)+9.5y=349000;
5.5y=165000
y=30000
x=46000-30000=16000
 
        
             
        
        
        
Answer:
That is good! Just plug them in the graph and you should be good. Also this should be a parabola correct?
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
t ≥ 18
Step-by-step explanation:
He has run 12 miles plus some more miles t.  He need to run at least 30 miles
12+t ≥ 30
Subtract 12 from each side
12+t-12 ≥ 30-12
t ≥ 18
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
4/7 x + 70 cm^3 = 3/4 x          Subtract 4/7 x from both sides
3/4 x - 4/7 x = 70 cm^3          The lowest common denominator is 28

5x = 70*28
5x = 1960                                Divide by 5
x = 1960/5
x = 392 cc