A school library has 200 DVDs in its collection. Given that 40% of the DVDs are about science and 45% are about history, how many of the DVDs are about other subjects?

When are two distinct non vertical lines parallel

Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?