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Một xe ô tô chuyển động từ A đến B rồi về C khi từ A đến B xe chuyển động với tốc độ trung bình 50km/h, khoảng cách AB bằng 90km.Khi từ B về C xe đi được 100 km với vận tốc trung bình 40km/h.Tính tốc độ trung bình của xe theo quỹ đạo trên

Sagot :

sabinabashyal123

Answer:

sorry i haven't understand this language

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