If a jogger runs a 10-kilometer race in 60 minutes, what is her average speed?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?