1 l dầu nặng là : 7,904 : 10,4 = 0,76 ( kg )

Nếu lượng dầu cân nặng 10,64 kg thì có số đầu là : 10,64 : 0,76 = 14 ( l )

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VỀ PHIM

The film I like best is Boy Hood.It's a school life film with the acting of Karry,Roy and Jackson.It's about school life and basketball competition between two schools.The film is very gripping and hilarious but it has a sad ending.The acting of the character is natural and exellent.The music,which is really suitable for this film and interesting with a fun rhythm.The visuals are beautiful with a lot of beautiful sceneries.Critics say that it is one of the best film with gripping and hilarious scenes.It also includes a meaningful message for the young.And,I think that is one of the best films I have ever-seen.It's a must-see film for everybody.

VỀ GIAO THÔNG

I think traffic in my city is bad and not strictly because there are many traffic problems.First,there are too many vehicles on the road.Also,m any cattle and dogs run along or across the road.Children play on it and some villagers sell and buy things,too.Second,many roads are narrow and bumpy.They are easily flooded when it rain so heavily.The roads roads become wet and slippery after the rain.The last,many people don't obey the traffic rules.They usually drive and ride very dangerously,so there are many traffic accidents everyday.In order to reduce these problems,we must strictly obey all the traffic rules

a, Xét tam giác ABH và tam giác ACK có:

AB=AC

góc AHB=AKC (=90 độ)

góc ABH=ACK

=> tam giác ABH = tam giác ACK ( cạnh huyền-góc nhọn)

b, Có góc ABH+HBC=ABC

góc ACK+KCB=ACB

mà góc ABC=ACB

góc ABH=ACK (do tam giác ABH = tam giác ACK )

=>góc HBC=KCB => tam giác DBC cân

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