9 plus How many sides nine times
        
                    
             
        
        
        
Answer: right
Step-by-step explanation:
 
        
             
        
        
        
Answer:
D. (–3, –6) and (5, 10)
Step-by-step explanation:
The system has equations:
 ...(1)
...(1)
and
 ...(2)
...(2)
Equate both equations;

Rewrite in standard form:

We factor to obtain:

By the zero product principle;


When x=-3, y=2(-3)=-6
This yields the ordered pair (-3,-6).
When x=5, y=2(5)=10
This yields the ordered pair (5,10).
The correct choice is D.
 
        
             
        
        
        
She could switch them around by grouping them into groups of 4s, 3s, 2s, or 5s.