Answer:
a
Step-by-step explanation:
 
        
             
        
        
        
No they are not equivalent and if you are trying to get a mixed number try dividing
        
             
        
        
        
Answer:
<h2>250%</h2>
Step-by-step explanation:
So first lets divide! 
10÷4=2.5
Now, 2.5 x 100 = 250! 
Hope this helped! Have a great day!
 
        
             
        
        
        
First add the seconds you have 45 +5+10 seconds which equals 60 seconds or 1 minutes. Now add the minutes 9 + 7 + 12 minutes = 28 minutes then add that 1 minutes that you got from the seconds 28 + 1 minute = 29 minutes 7:40 + 20 minutes = 8:00 + 9 minutes = 8:09 am. So Marsha arrived to school at 8:09 am. Comment if you have any questions.
        
             
        
        
        
It cannot simplified further as 17 is a prime number