Ok this is the last question that i'm gonna ask that i don't need an answer to what is definition of acute angle

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

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

Multiply. write your answer in simplest form. 3/8 x 5/7