Respuesta :

Answer:

49.629629...

Step-by-step explanation:

1211 = 1 + 3 + 2*3^2 + 1* 3^3

=  4 + 18 + 27

= 49.

0.122

= 1 *3^-1 + 2*3^-2+2*3^-3

= 0.629629....

The person above me is correct! Good job and merry Christmas