Among the eighth-graders in michael's school, 70% have siblings. the eighth-grade class is 5/6 the size of the seventh-grade class.

if 112 eighth-graders have siblings, how many students are in the seventh grade?

a. 128

b. 134

c. 160

d. 192

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.