user-avatar
581967452540650
2 năm trước
Giải bài toán bằng cách lập phương trình: Một người đi xe máy từ tỉnh A đến tỉnh B với vận tốc 30 km/h. Lúc về người đó đi với vận tốc nhanh hơn vận tốc lúc đi là 20 km/h. Tính quãng đường từ tỉnh A đến tỉnh B, biết thời gian về ít hơn thời gian đi 2 giờ. giup mik vs mn oi cau nay kho qua
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Appeals were being made last night for Corsicans to come forward and donate blood following the collapse of the football stadium in Bastia. The tragedy left 26 fans dead; the number of injured has been put at 700. (1)_______ to eyewitnesses, workers were still tightening bolts on the temporary scaffolding only an hour and a half before the match was (2) _______ to begin, and as fans passed into the stadium, the structure, (3) _______ holds up to 10.000, swayed violently and eventually collapsed. Many of the (4) _______ were given emergency treatment on the pitch while more serious cases were (5) ______ to hospitals on the mainland. A spokesman from the firm responsible for the stand’s construction could only express horrified disbelief. According to him, although some of the bars had collapsed, others should have supported the structure, thus preventing it from falling down. Question 1. A. With a view B. Regarding C. Referring D. According Question 2. A. up B. about C. bound D. due Question 3. A. where B. when C. which D. what Question 4. A. injured B. wounded C. damaged D. wrecked Question 5. A. delivered B. trafficed C. travelled D. transferred

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team