A container is filled with 20 red, 15 yellow and 10 blue chips. Find the probability of selecting a red or yellow chip. Write your answer as a fraction in simplest form

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?