Given two angles that mesaure 50 and 80 and a side that measures 4 feet how many trainagles could be constructed

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Does anyone know how to do geometryme with this problem

Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens