Answer:
x = 
Step-by-step explanation:
Given
x + 
 = 
Multiply through by 80 ( the LCM of 20 and 16 ) to clear the fractions
80x + 36 = 45 ( subtract 36 from both sides )
80x = 9 ( divide both sides by 80 )
x = 
 
        
             
        
        
        
Answer:
80
Step-by-step explanation:
divide the circumference (251.2) by pi (3.14) and get 80
 
        
             
        
        
        
Answer:
3884.4 is what percent of 46.8 is 8300
 
        
             
        
        
        
4a) -5;
 -4x+5=25
-4x=20
X=-5
4b) No;
-4(0)+5=5
4c) Yes;
-4(-7)+5=33