Find the diameter of the circle with the given radius.
3. 34 feet
4. 19 meters

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

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.

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa