Hey anyone got some fun facts? Doesn't matter about what, just wanna hear some.

If i have 20$ and i gave 5$ away how much i got

Abcd is a square. what is the measure of angle bac

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?