Which of the following is not a rational number?

What is the distance between (–2 1/2,-3) and (1, –3)?

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth