Abasketball team has 12 players. in how many different ways can the coach select 2 players to be the captains for tonight's game?

Which best explains why this triangle is or is not a right triangle?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

This is about circle theorems. someone asap : (