Answer:
x - y = 5
x + y = 23
x = 14, y = 9
Step-by-step explanation:
Make x subject:
x = 5 + y
Substitute c by (5 + y) :
( 5 + y) + y = 23
2y = 18
y = 9
Substitute y (9):
x = 5 + 9
x = 14
 
        
             
        
        
        
Answer:
20-8.30=11.70
11.70 she is able to buy 11 brownies 
Step-by-step explanation:
 
        
             
        
        
        
Doesn’t make sense to me srry
        
             
        
        
        
Answer:
   add 6 unit tiles
Step-by-step explanation:
The square is completed when the algebra tile grid pattern is a square. This one will be a square when 6 more unit tiles are added to fill the empty spaces at the bottom right.
 
        
                    
             
        
        
        
Step-by-step explanation:
Hope it helps you in your learning process.