William has 3 jars of marbles that he wishes to share equally with his brother. in the first jar there are 12 marble in the second jar there are 21 marbles ,and in the third jar there are 17 marbles . write an expression with parentheses to show how many marbles each boy will get? then simplify the expression

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.