Triangle XYZ is rotated 90° counterclockwise about the origin to produce △X′Y′Z′. What are the coordinates of △X′Y′Z′?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?