Respuesta :

wegnerkolmp2741o

Answer:

D y= 81

Step-by-step explanation:

Since the triangles are similar, the ratios of similar sides must be equal.

30/54 = 45/ y

We can use cross products

45*54 = 30*y

2430=30y

Divide each side by 30

2430/30 = 30y/30

81 =y