PLEASE ANSWER IMMEDIATELY!!! REALLY NEED HELP

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis. how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

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