Answer! these are due tmr and it's 12: 53 rn!

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.