Respuesta :

Answer:

9:90

Step-by-step explanation:

For 1 to get to 9, multiply by 9

1:10 = 9:?

Then multiply 10 by 9

1:10 = 9:90

Answer: 9 : 90

Step-by-step explanation:

= We can see that 1 * 9 = 9

= so , 10 * 9 = 90

Therefore the answer is 9 :90

I hope it helps !!

Enjoy learning !