Brad used the formula to find the distance in miles, d, he was from a stroke of lightning. In the formula, n is the number of seconds that have elapsed between seeing the lightning and hearing the thunder. How far away was Brad from the lightning if 30 seconds elapsed between Brad seeing the lightning and hearing the thunder?


  1. Answer:
    10 seconds
    Step-by-step explanation:
    using the formula we can see that since 30 seconds have passed we divide this by 3 to get 10.
    Therefore  the answer is 10 seconds
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