In 9 hours, yoko reads 72 chapters of a book. what is her rate in chapters per hour?

The answer is eight because you need to split the 72 chapters by the 9hours and you get 8

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .