ronatran ronatran

20-09-2021
Physics

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Bài 1. Một chiếc xe trong 2 giờ đầu xe đi được quãng đường 40 km, trong 3 giờ tiếp theo xe đi được quãng đường 90 km. Tính tốc độ của xe trên cả quãng đường.

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Jayjaykyutt29 Jayjaykyutt29

24-09-2021

Answer:

sorry I don't understand

Explanation:

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