What is the answer this i really need to know

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Anita has a success rate of 80% on free throws in basketball. she wants to know the estimated probability that she can make exactly four of five free throws in her next game. how can she simulate this scenario? categorize each simulation of this scenario as correct or incorrect.