Answer:
The correct option is 1.
Step-by-step explanation:
If an angle bisector divides a triangle in two parts, then the line segments of that side will have the same ratio as the other sides of the triangle.
\(\frac{20.1}{x}=\frac{17.5}{7.5}\)
\(20.1\times 7.5=x\times 17.5\)
\(x=\frac{20.1\times 7.5}{17.5}\)
\(x=8.61429\)
\(x\approx 8.6\)
Therefore option 1 is correct.
