Justin and austin decide to play catch after school. they start at the same point. justin walks 50feet north and 20,feet west. austin walks 40 feet south and 10 feet east. how far apart are they?

Which expression gives the area of the triangle shown below

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list

The tile along the edge of a triangular community pool needs to be replaced? ?