<span>Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?</span>
        
             
        
        
        
Answer:
150 km/h 
Step-by-step explanation:
because it's then 2 together
 
        
             
        
        
        
Answer:
20 cups are in 5 quarts
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
micheal need 6.15
Step-by-step explanation:
open the document and you will get the show your work part good luck
13.00
 6.85-
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 6.15 
thats 
it pretty much the other one just show how i was able to get froom  
  	12	9	
  0	2	10	10
-------------------------------------------
  1	3.	0	0
−	0	6.	8	5
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  0	6.	1	5