Respuesta :

9514 1404 393

Answer:

  0.75 : 1

Step-by-step explanation:

You know that 12/12 = 1, so you can make the right side 1 by dividing both numbers in this ratio by 12.

  9 : 12

  = (9/12) : (12/12)

  = (3/4) : 1

  = 0.75 : 1