Mathematics, 06.03.2021 01:50, jelopez4

I need help! I know the answer, I just don't know how to get it. The answer is 69.25 seconds.

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Mathematics, 21.06.2019 23:10, ylianafghgfdsnm1479

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I need help! I know the answer, I just don't know how to get it. The answer is 69.25 seconds.
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