Astudent sets up the following equation to convert a measurement.
(the ? stands for a number the student is going to calculate.)
fill in the missing part of this equation.

0.029

Explanation:

Initially, the number the student intends calculating is 29:

 From 29 x

but a submutiple of a thousand was introduced in form of mc²:

  this implies:

     29 x( 1/) :

to make the expression correct: 29 should be 0.029

 0.029 x ( 1/)  

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter