If a tree has a shawdow thats length is 10 feet and a post has a shawdow thats length is 4 and the the post is 2 ft tall how tall is the tree

Determine the relationship of ab and cd given the following points

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

What statement is true? 2x^2-9x+2=-1