Answer:5/2a + 10/3b
Step-by-step explanation:
(1/6)(15a+20b)
=(1/6)(15a)+(1/6)(20b)
 
        
             
        
        
        
Answer:
Step-by-step explanation:
sure i am here to help always for 
 
        
                    
             
        
        
        
Cosine(angle) = adjacent leg/ hypotenuse 
Cosine( angle ) = 18/20
Angle = arccos(18/20)
Angle = 26 degrees
 
        
                    
             
        
        
        
4x345=1380
3000-1380=1621
Answer= Denise would have 1,621 water bottles left