Question

What Is The Length Of RT?

Answer 1

Answer:

B

Step-by-step explanation:

AS is an angle bisector, thus the ratio of the sides of the triangle is equal to the ratio of the corresponding parts of RT, that is

$\frac{SR}{ST}$ = $\frac{RA}{TA}$, substituting values

$\frac{7.5}{9}$ = $\frac{3.5}{x}$ ( cross- multiply )

7.5x = 31.5 ( divide both sides by 7.5 )

x = 4.2

Thus

RT = 3.5 + x = 3.5 + 4.2 = 7.7 → B