Which expression represents 50 divided by an unknown number

You didn’t give answer choices, so I would say it would probably be;

50/x Or some other variable.

If you aren’t clear on what a variable is, it’s a letter that represents an unknown factor or numerical value in an expression.
If you aren’t aware of what 50 is divided by, my guess is you’d use a variable to state this.

So your answer should be 50/*variable*
In my example I used x, but your answer might use another letter.

I hope this helps, and I’m sorry if I’m wrong.
Good luck. :))

Based on the question I believe it would be: y=50/x