Two cars start from two towns 500 miles apart and travel towards each other. they pass each other after 5 hours. find the speed of each car if the difference between their speed is 40 miles per hour.

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

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

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?