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4 September, 20:35

John played a note on his tuba that vibrated the air 120 times per

second. If he played the note for 4 seconds, how many times did

the air vibrate?

+3
Answers (2)
  1. 4 September, 22:44
    0
    480

    Step-by-step explanation:

    12*4=48

    put a zero on the end and you get:

    480
  2. 4 September, 23:18
    0
    480 times

    Step-by-step explanation:

    per second=120

    4 seconds=?

    120 x 4 = 480
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