10+(-7)=3. Hope this helped :))
        
             
        
        
        
Answer:
An equilateral triangle has 3 lines of symmetry
Hope this helps
Step-by-step explanation:
 
        
             
        
        
        
Answer: A. sqrt of 500.
Step-by-step explanation: If you simplify the sqrt of 500, you will get 10 sqrt of 5
 
        
                    
             
        
        
        
Answer:
   35% chose baseball or soccer
Step-by-step explanation:
   baseball or soccer = 20% + 15% = 35%
_____
The categories add to 100%, so are mutually exclusive, as you expect when they are "favorite sport" categories. Hence the union of two of them will be their sum. (Otherwise, you'd have to subtract the amount by which the categories overlap.)
 
        
             
        
        
        
9*9=81. So Kurt baked 81 cookies.