21. George had $180. He spent a quarter of it on marbles. How
much money does he have left?
*
$ 135
Ο Ο Ο Ο
$ 145
$ 176​

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.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Drag the tiles to the boxes to form correct pairs. not all tiles will be used. match each set of vertices with the type of quadrilateral they form