Xy has endpoints at x(2,-3) and y(-1,2). what is the length of xy?

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.