Respuesta :

hillfao000

Answer:

i dont know

good luck

Step-by-step explanation:

s1m1

Answer:

7.5

Step-by-step explanation:

triangle ABC and XBY are similar so the sides are in proportion

BX /BY = BA /BC

4/6 = 5/BC; cross multiply

4*BC = 5*6 ; divide both sides by 4

BC= 5*6/ 4 = 30 /4 = 7.5