Sam buys 20 boxes of oranges. there are 25 oranges in each box. each box of oranges costs £7. sam sells 2/5 of the oranges he brought. he sells each of these oranges for 40p. he then sells all of the remaining oranges at 3 oranges for 50p. did sam make profit or did sam make a loss?

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.