Is 2.875 a rational or irrational number?

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10