Các câu hỏi tương tự
mot ca no di tu 6 gio 30 phut den 4 gio 45 phut duoc quang duong 30 km tinh van toc cua ca no
mot ca no di tu 6 gio 30 phut den 7 gio 45 phut duoc quang duong 30 km.Tinh van toc cua ca no
mot ca no di nguoc dong tu 6 gio 30 phut den 7 gio 45 phut duoc quang duong 30km biet van toc dong nuoc la 2,5 km/gio van toc khi ca no di nuoc lang la
Luc 6 gio 30 phut , mot ca no di xuoi dong tu ben a den ben b , ca no nghi 2 gio 15 phut va tro ve ben a luc 14 gio 15 phut . Biet van toc cua ca no khi nuoc lang la 24,3 km/gio va van toc cua dong nuoc la2,7 km/gio . Tinh :
a)Thoi gian ca no xuoi dong tu a den b va thoi gian nguoc dong tu b den a
b)quang duong tu ben a den ben b
mot oto di tu a luc 7 gio 30 phut va den b luc 8 gio Quang duong ab dai 23,5km Tinh van toc cua oto xe may hkoi hanh tu a luc 5 gio 45 phut va di den b luc 7 gio voi van toc 32km/gio Tinh quang duong ab
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Đọc tiếp
https://www.google.com/search?q=1+ca+no+di+nguoc+dong+tren+quang+duong+ab+dai+61%2C1+km+mat+2+gio+36+phut+tinh+van+toc+cua+ca+no+khi+nuoc+lan+biet+van+toc+cua+dong+nuoc+la+2%2C2+km+%2F+gio&oq=1+ca+no+di+nguoc+dong+tren+quang+duong+ab+dai+61%2C1+km+mat+2+gio+36+phut++tinh+van+toc+cua+ca+no+khi+nuoc+lan+biet+van+toc+cua+dong+nuoc+la+2%2C2+km+%2F+gio&aqs=chrome..69i57.108752j0j7&sourceid=chrome&es_sm=93&ie=UTF-8#q=1+cano+di+nguoc+dong+tren+quang+duong+ab+dai+61,1+km+mat+2+gio+36+phut+tinh+van+toc+cua+ca+no+khi+nuoc+lan+biet+van+toc+cua+dong+nuoc+la+2,2+km+/+gio
Mot ca no xuoi dong tu A den B voi van toc 15km/gio .Biet van toc cua dong nuoc la 2km/gio va ca no di nguoc dong tu B ve A het 1 gio 30 phut. tinh do dai quang song AB
Hai ben song A va B cach nhau 60 km. Luc 7 gio hang ngay mot ca no di tu A den B va mot ca no khac di tu B den A , hai ca no gap nhau luc 8 gio 30 phut. Tinh van toc cua moi ca no?
Cac ban mau giup minh nha!
mot o to di tu tinh A luc 6 gio 30 phut va den tinh B luc 8 gio 55 phut, giua duong o to co nghi mat 25 phut. tinh quang duong AB. biet rang, van toc cua o to 45 km/gio.