Jeff and his friend each text four classmates about a concert. each classmate then text four students from another school about the concert. if no one receives the message more than once, how many students from the other school receive a text about the concert.

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x, y) ?

Which of the following is the graph of y= square root -x-3

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.