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Một người đi xe máy từ A tới B cách 45km . Trong nửa thời gian đầu đi với vận tốc v1 , nửa thời gian đi với v2 = 2/3 v1 . xác định v1 , v2 biết sau 1h30 phút người đó đến B

CM: $\frac{2\sqrt{ab}}{\sqrt{a}+\sqrt{b}}$ $\leq$ $\sqrt{ \sqrt{ab}}$

vẽ anime nam ngầu nhé!!! Hóng mấy idol NL:ai chat ko bùn quố!

Trừ 8 la mã ra còn lại trong ảnh mình cần đáp án hết ạa

Câu này hơi khó, các cao nhân giải giúp em với

Giúp mk vs:((( CẦN GẤP!!!!!!!!!!!!!!!

Mn giúp mình câu 4 với ạ,mình đang cần gấp.cảm ơn trước ạ❤

Tìm x thuộc Z: 154 × | x+32 | = 770 cho mk hỏi cái | là j vậy

Đặt 3 câu hỏi đơn giản bằng tiếng anh cho những tình huống sau: 1. One of your friends is a member of your school football team. Ask her/him three questions for some information. 2. Your school is going to have a trip to a museum. Ask the leader three questions about the trip. 3. One of your friends has come back from his/her holiday. Ask her/him three questions about the holiday. 4. One of your friends saw a TV program last night. Ask her/him three questions about the program. 5. One of your friends has just started his/her first year at university. Ask her/him three questions about university life. 6. You would like to buy a book at a bookshop. Ask the shop assistant three questions. 7. One of your friends has been to the film club. Ask her/him three questions about that club. 8. One of your friends has taken an intensive English class at a language school. Ask her/him three questions about that class. 9. One of your friends has participated a birthday party. Ask her/him three questions about the party. 10. One of your friends has taken a part-time job. Ask her/him three questions about the part time job.