The path from the subway station to the art museum is three blocks to the north then four blocks to the west. What is the straight-line distance in blocks from the subway station to the art museum?

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

What is the number 321,000,000 in scientific notation? also what is the number? ?

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.