Find the measure of each angle (help me please)

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

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

What is the prime factorization of 23 ?me with this question