Ben runs around the track at a pace of 1 lap every 80 seconds. sally runs on the track in the opposite direction. the two meet every 30 seconds. how long does it take sally to run each lap around the track?

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?