Answer:
So the number of ways of choosing two distinct letters at a time is (42)=6. We can then add the duplicate pairs which are O,O and N,N to give a total of 8 possible pairs.
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
1 12 
2 19
3 10
4 28
5 2
 
        
             
        
        
        
Answer:
Step-by-step explanation:
has to sweep 4/6
already swept 3/6
it needs to sweep 1/6 because
4 / 6-3 / 6 = 1/6
Since they are fractions with the same denominator, you place the same denominator and subtract the numerators.
 
        
                    
             
        
        
        
Answer:
I need help with this too
Step-by-step explanation:
 
        
             
        
        
        
Answer:
-500
Step-by-step explanation:
2300-6500-2500--1100--600-150-250-+600