Aplane flies 256 miles in minutes. which expression represents the rate, in miles per hour, of the plane

256 miles per minutes                                                                                                    since 60 mins make 1 hours                                                                                                  256/60                                                                                                                         4.26miles per hour

“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 .