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Mathematics, 26.07.2021 20:00 andrew8228
Điều tra 200 người thấy : Có 60 người chỉ thích bóng đá ,80 thích bóng chuyền và 90 người thích bơi có 20 người thích bơi và bóng chuyền . Hỏi có bao nhiêu người thích cả 3 môn (Giải bằng sơ đồ venn )
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Answers: 3
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Mathematics, 21.06.2019 19:30
If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).
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If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32
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Điều tra 200 người thấy : Có 60 người chỉ thích bóng đá ,80 thích bóng chuyền và 90 người thích bơi...
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