8:55 pm -1:51pm elapsed time

4 hours and 56 minutes

Step-by-step explanation:

8:55 - 1:51

Break it up into parts

8:55  to  9:00 = 5 minutes

9:00  to  1:00 = 4 hours

1:00  to  1:51 = 51 minutes

Add all resulting values

5 minutes + 4 hours + 51 minutes

4 hours and 56 minutes

Hope this helps :)

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step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)