9.In the year 2015 Emily was three times as old as Kaitlin. By the year 2021 Kaitlin will be half as
old as Emily will be. How old was Emily on the year 2000
year 2000

answer: 1, 3 and 5 are correct

step-by-step explanation:

7/2

(decimal: 3.5)

welcome ; )

step-by-step explanation:

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)