8x +9 = 6x + 21 where x = number of chairs in each row
2x=12
x=6
sub back into original equation 8 x 6 + 9 =57 chairs 
        
             
        
        
        
Answer: 2/3 hours
Step-by-step explanation:
okay so the speed now is 850, which is   850/340  = 2.5 times the original speed
Since It's 2.5 times the original speed,
2.5x = 5/3
so x = 5/3/2.5 = 2/3
 
        
                    
             
        
        
        
1. v=0 
2. No solution
3. m=0
4. No solution
5. p= -7
6. x=5
7. -12 = - 12
8. x=5 
9. 3=3
10. -32= -32
11. x=0
12. No solution 
I'm sorry if anything is wrong.
 
        
                    
             
        
        
        
Answer:
   x = -5
Step-by-step explanation:
We don't know what equation solver you're supposed to use. Here are the results from one available on the web.
 
        
                    
             
        
        
        
The correct answer is D. They merged religious which was from the lands which were conquered with zoroastrian rituals.
The rise of persian empire was because of Cyrus the great and the Achaemenid Empire. People who were defeated by Cyrus they called him law giver and worthy ruler. People who followed him referred t o him as their father.
He build Pasargadae capital city and brought many architectural possibilities.
He allowed people to have their own culture and religion and all the jews who were held by babylonian were being freed.