bearing in mind that the centroid in a triangle cuts each of the three medians in a 2:1 ratio.
since we know that A C = 12, let's split it in a 2:1 ratio then, cleary from the picture the larger is F C, so F C : A F is on a 2:1 ratio.

Yes 28/30 is bigger than 4/5.
The last one: the arc AB is a semicircle.
a semicircle is 180 degrees
I think division, at least that's how I wrote it in school
Answer:
-1/3
Step-by-step explanation:
its subtracting 1/3 every time