You walk 10 meters to class in 20 seconds , your average speed is ___ ?

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You walk 10 meters to class in 20 seconds , your average speed is ___ ?

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Tryphena 6 months 2021-07-24T02:55:20+00:00 1 Answers 1 views 0

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    2021-07-24T02:56:48+00:00

    2 seconds per 1 meter. (20/10=2/1)

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )