2. If the 4th term is 8 and the common difference is - 4, what are the first 3 terms of the arithmetic sequence? A. -4,0,4,8 B. -4,-8,4,8 C. 20, 16, 12,8 D. 20, 16, -12,8 plz answer
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Step-by-step explanation:

oi1i11i1¹111111¹1o1

it should be a and d. lmk if i'm wrong xd

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)