yannie16
16.08.2021 •
Mathematics
Một lô hạt giống được phân làm 3 loại. Loại I tỷ lệ nảy mầm là 80% chiếm 2/3 số hạt, loại II tỷ lệ nảy mầm là 70% chiếm 1/4 số hạt và còn lại là loại III tỷ lệ nảy mầm là 50%. Hỏi tỷ lệ nảy mầm chung của lô hạt giống là bao nhiêu? Lấy ngẫu nhiên ra một hạt gieo thì hạt nảy mầm, tính xác suất để hạt lấy ra đó là loại II.
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Ответ:
-54, 28, 53, 73
Hope this helps!
Remember, negatives are less than positives and will always be the least, depending on how many negative numbers there are.