Answer:
(8,-9)
Step-by-step explanation:
using the principle of vectors, you match each number to their coordinates and add them
so we have (7+1,-12+3)
which is equal to (8,-9)
 
        
                    
             
        
        
        
Answer:
The dog's running area is approximately 942 feet².
Step-by-step explanation:
The dog is leashed to a fixed point, the leash has a length of 20 ft, therefore he can rotate around that point at the maximum distance equal to the length of the leash. This pattern forms a circle, but there is an obstruction, which is the corner of the house. This obstruction takes an arc of the original circle, so the running area of the dog is the area of the whole circle minus the area of the arc formed by the corner of the house. 

The dog's running area is approximately 942 feet².
 
        
             
        
        
        
Answer:
182
Step-by-step explanation:
take 520 and multiply by 0.35
 
        
                    
             
        
        
        
Answer:
what
Step-by-step explanation:
sure?
 
        
             
        
        
        
Answer:
answer is 85 cm I hope it help