In a hot dog eating contest, Kalil ate 15 hot dogs in 2 minutes and 15 seconds. How many hot dogs did he eat per minute?

Solve 2x+y=3 x+y=5 in substitution method

Standard deviation of 19,29,21,22,23

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.