Hunter is creating a stained glass windowpane that will be 21 inches by 72 inches. To make the rectangular windowpane, Hunter fuses together two triangles of colored glass. What is the perimeter of one triangle?

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

What makes a trapezoid an isosceles trapezoid?

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your