Answer:
6/35
Step-by-step explanation:
![\frac{2}{5} *\frac{3}{7} =\frac{2*3}{5*7} =\frac{6}{35}](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7D%20%2A%5Cfrac%7B3%7D%7B7%7D%20%3D%5Cfrac%7B2%2A3%7D%7B5%2A7%7D%20%3D%5Cfrac%7B6%7D%7B35%7D)
The beginning of the line segment starts at 5, and ends at 9.
Therefore,
5 - 9 = 4
The length of the segment is 4.
BC/DC = 8/3.2 = 2.5
AB/BD = 12.5/5 = 2.5
AC/BC = 20/8 = 2.5
Since the results are all 2.5, this means that the triangles are similar triangles.
The justification you would use is the SSS similarity theorem.
SSS = side side side