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1. a principal needs 2 chaperones for every 25 students at
the school dance. how many chaperones does he need if
225 students are expected to be at the dance?

“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 .