Which of the following describes a properly controlled experiment

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Which of the following describes a properly controlled experiment

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Trúc Chi 1 day 2021-07-21T23:44:13+00:00 2 Answers 0 views 0

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    0
    2021-07-21T23:45:20+00:00

    Example data i think

    0
    2021-07-21T23:45:22+00:00

    make sure to include the list of answers next time, have a great day 🙂

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