Bài 3

Số hs đạt loại xuất sắc là: 

  90.20%=18 ( hs)

Đáp số:..

4:

a: Vì ON<OM

nên N nằm giữa O và M

b: Vì N nằm giữa O và M

nên ON+NM=OM

=>NM=3,5cm=ON

=>N là trung điểm của OM

tự chép đi. thế thì tự đi mà trả lời

Nhỏ quá

hơi dài bn ạ

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Cau 23: B

Câu 24: A

23 là b

còn 24 là a