Identify Y, inscribed angels

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

Atravel agent is booking a trip to england, scotland, ireland, and france for a group of senior citizens. the agent sent surveys to the group, asking which countries they would like to visit, in order, and created the shown preference schedule (e = england, i = ireland, s = scotland, f = france). which country is the condorcet winner? number of votes 15 12 16 19 1st f e e i 2nd e s i s 3rd s i s e 4th i f f f 1. scotland 2. england 3. france 4.ireland