Someone please help ASAP

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?

The legs of a right triangle measure 6 meters and 8 meters. what is the length of the hypotonuse.