Please help it’s a test and it’s timed

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.

Find the sixth term of the following geometric sequence.

X=4 / y=100 if x=10 then what is y=?