We know there are 60 minutes in an hour.  To find 2/3 of an hour we divide 60/3 to find 1/3 and multiply by 2 so:
60/3 = 20
20*2 = 40 minutes (which is 2/3 of an hour) to do science
We do the same thing with the 40 minutes.  To find 1/4 of 40 minutes we divide 40 by 4 and then multiply it by 3 to get 3/4 so:
40/4 = 10
10*3 = 30 minutes
Then subtract the times 40-30 = 10 minutes
It took her 10 more minutes to complete her science homework.
Hope that helps
        
             
        
        
        
Answer:
0.6
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i hope this helps! have a wonderful rest of ur day :)
 
        
                    
             
        
        
        
Answer:
v≤-12, and the graph is left 12  
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Your smart maybe
Step-by-step explanation:
 
        
             
        
        
        
Just subtract 2.003 and 0.520 which gives you 1.483 so there is 1.483 kilogram of soil remaining hope this helps!