Respuesta :

Answer:

40.5

Step-by-step explanation:

Since QS is an angle bisector then PQs and SQR are similar. Using the similarity theorem;

PQ/PS = QR/SR

45/20 = x/18

Cross multiply

20x = 45 * 18

20x = 810

x = 810/20

x = 40.5

Hence the value of x is 40.5