The third one is the correct answer
tenths because 42.02 it would be tenths the first decimal is tenths and second is hundreths
Answer:
0.2425373
Step-by-step explanation:
78 divided by 321.6 equals to 0.2425373
When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases. Part of the wave travels faster for longer causing the wave to turn. The wave is slower but the wavelength is shorter meaning frequency remains the same