Answer: $27.20 
Step-by-step explanation:
She bought a blouse for 20% off so it means that she paid 80% of the original price.We can then set up the equation  
80% of x = 21.76   where x is the original price so solve for x 
0.8x = 21.76   
x = 27.20 
Which  means the original price is $27.20 
 
        
             
        
        
        
PV = nRT
P: pressure of gas
V: volume of gas
n: number of moles of gases
R: constant
T: thermodynamic temperature of gas
All the statements apply
Hope it helped!
        
             
        
        
        
The answer is D hope this help
        
                    
             
        
        
        
Answer:
first one: 3 1/3 = 7/3 second: 2 3/4 = 11/4
third one: 3 1/3 + 2 3/4 = 10/3 + 11/4 = 40/12 + 44/12
there fore the answer is: 84/12 or 7
 
this may help you the first one question only.
 
        
             
        
        
        
 Answer:
no solution 
not sure but you can use math
way to solve