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xojade
16.12.2019 •
Mathematics
Sound travels about 750 miles per hour. if you stand in a parking lot near a building and a sound a horn, you will hear an echo. a. suppouse it takes about 1/2 a secon to hear the echo. how far away is the building ^13? .
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Ответ:
distance = (750 miles/h) x (1 h/3600 s) (0.25s)
= 0.052 miles
Ответ:
URgent U certainly aren't cheating my my u should focus more in class