The circus sets up chairs in rows with 9 seats in each row will need to be set up if 513 people are expected to attend the show ?

57 rows, because 513/9=57

57 rows because 513 divided by 9 = 57

“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 .