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Câu 2:
Một lớp học có 40 học sinh chia thành các nhóm, mỗi nhóm nhiều nhất 6 học sinh. Hỏi số nhóm ít nhất có thể là bao nhiêu?
Giải:
Vì 40 : 6 = 6 (dư 4)
Số nhóm ít nhất có thể là:
6 + 1 = 7(nhóm)
Kết luận: Số nhóm ít nhất có thể là: 7 nhóm.
Câu 3:
Cho đoạn thẳng . Trên lấy điểm sao cho . Độ dài đoạn thẳng là bao nhiêu?
Chưa đủ dữ liệu để xác định độ dài đoạn thẳng.
câu 1:
chiều dài là a;chiều rộng là b;diện tích tam giác là a.h/2(a là đọ dài cạnh đáy,h là chiều cao tương ứng)
câu 2:
0
....(nản.thi vio phải ko)_
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Câu 1 : 0
Câu 2 : 0
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