Answer:
c= -18
Step-by-step explanation:
c+4c= -90
combine like terms
5c= -90
Divide by 5 on both sides
c= -18
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
hello : 
19=3s+4
19-4 = 3s+4-4
3s=15
s=15/3
s=5
 
        
                    
             
        
        
        
Answer:
Would you mind posting a picture instead thank you. 
 
        
                    
             
        
        
        
Answer:
15w³
Step-by-step explanation:
you need to check for the of 225w^6 and see what you can take out. 
you can take 3 w's out. and 225 is a perfect square, because 15² = 225
(basically the answer you have in there but you just have to get rid of square root)