A polygon has the following coordinates: A(-6,5), B(-1,5), C(5,3), D(-1,1), E(-6,1). Find the length of DE.

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

An octagonal prism has jow many lateral faces?