Merino has a beaded necklace business. she can make 12 necklaces in 2 hours. how long will it take to make 9 necklaces?

2/3 of an hour which is 40 minutes

“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 .