Respuesta :

mhanifa

Answer:

  • a. 7.2

Step-by-step explanation:

Bisector is a common side.

Corresponding sides:

  • 10 and 18, 4 and x
  • it is easy to remember by the equal angles. Corresponding sides are against those angles.

Ratio of corresponding sides are equal:

  • 10/18= 4/x
  • x = 4*18/10
  • x = 7.2

Correct option is a. 7.2