In a class book order, 2/3 of the books are fantasy and 1/4 of the books are biography. If the order contains 60 books, how many books are either fantasy or biography?

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

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

How are sas and sss used to show that two triangles are congruent?