Rút gọn B=5.8+10.24+15.32/10.16+20.48+30.64

giup minh nha cam on Câu 2: (3,0 điểm): a) Áp lực là gì ? Áp suất là gì ? b) Kể tên các loại lực ma sát ? Ma sát sinh ra ở giữa đĩa và xích xe đạp là ma sát gì ? Có tác hại gì và nêu cách làm giảm ?

Câu 6. Một khu đất hình chữ nhật có chiều dài 150 m, chiều rộng bằng 25% chiều dài. a) Tính diện tích khu đất đó. b) Người ta trồng rau trên khu đất đó, tính ra trung bình cứ 100 m 2 thì thu hoạch được 80 kg rau. Hỏi trên cả khu đất đó người ta thu được bao nhiêu tấn rau?

Lập PTHH và cho biết chúng thuộc loại phản ứng hóa học nào? a, Na+O2--->Na2O b,Fe(OH)2+O2+H2O--->Fe(OH)3 c,KNO3---->KNO2+O2 d,AgNO3--->Ag+NO2+O2

giúp mk nha các bn mk sẽ vote+cảm ơn+CTLHN

Mn giúp e vs Mk sẽ rất cảm ơn và hứa vote 5 ★ ạ

Mình đang cần gấp :(( mong các cao nhân chuyên anh giúp đỡ phần thưởng chắc chắn sẽ là 5* ❤ và lời cảm ơn !!!

các bạn ơi giúp mk nha so sánh hơn với tính từ và trngj từ mk vốn dốt anh lắm (┬┬﹏┬┬)

I. Choose the correct words or phrases in brackets to complete the sentences :(3ms) 1 . My mother used to ..................... morning exercise when she got up early. A. did B. does C. doing D. do 2.You should look right and left when you go ....................the road. A. down B. across C. up D. along 3. ..................... is La Tomatina celebrated? – Every August. A. Where B. Why C. When D. Which 4.My father liked the ....................... of that singer. A. perform B. performer C. performance D.performing 5. Choose the word that has the underlined part is pronounced differently from the others A. washed B. attended C. decided D. disappointed 6. . There……………a bus station in the city center, but it has been move to the suburds. A. used to be B. used to have C. use to have D. were 7. Cyclists and motorists have to wear……………when they ride a motorbike. A. hard hat B. cap C. mask D. helmet 8. Traffic accidents can be prevented if everyone __________ the rules. A. remember B. obey C. go after D. take care of 9. Choose the word that has the underlined part is pronounced differently from the others A. healthy B. ahead C. bread D. seatbelt 10. The play was so boring. ...................., Hoa saw it from beginning to end. A. Therefore B. Despite C. However D. Although 11. ........................being frightened by the images, Lan still liked the film so much. A. In spite B. Despite C. Although D. Nevertheless 12 .Choose the word whose main stress is placed differently from the others. A. traffic B. agree C. noisy D. student II. Complete the sentences with correct forms of the verbs in the brackets. (1m) 1.He used to ( go )……………… to work by motorbike. Now he doesn’t. 2.How about (see) ……………. a movie on Sunday evening ? 3. Her brother ( watch) ……..……….. a very interesting football match on TV yesterday. 4. Nam (learn) …………………………….. English for 6 years. C. WRITING: (2,5ms) I. Make questions for the underlined parts of the following sentences. (1m) 1.The Elephant Race Festival will be held in Don Village next year. …………………………………………………………………………………………… 2. Nam often goes to school by bike. …………………………………………………………..………………………………… II. Put the words in the correct order.(1m) 1. How / is / it / far / your / house / from / to / school / your? ……………………………………………………………………………………………? 2.We / obey / must / always / rules / traffic / our / for / safety / the. ……………………………………………………………………………………………. III. Rewrite the following sentences so that their meaning stays the same. ( 1,5ms) 1. The distance from my house to the supermarket is about one kilometer . It is about .................................................................................................... 2. My father went to work by car some years ago, but now he goes by bus. My father used to........................................................................................ 3. Although he studied hard, he didn’t pass the exam. Despite ............................................................................................................................... D.READING: (2,5ms) I.Read the following passage Choose a suitable word from the box to fill in each gap. (1m) especially by because many find have When you are in Singapore, you can go about (1) ........................................... taxi , by bus, or by underground. I myself prefer the underground (2) ................... it is fast, easy and cheap. There are many buses and taxis in Singapore and one cannot drive along the road quickly and without many stops, (3).................................on the Monday morning. The underground is therefore usually quicker than taxis or buses. If you do not know Singapore very well, it is difficult to (4).....................the bus you want. You can take a taxi , but it is more expensive than the underground or a bus . On the underground, you find good maps that tell you the names of the stations and show you how to get to them, so that it is easy to find your way. *Note : underground (n) : xe điện ngầm II. Answer the questions (1,5ms) 1. How can you go when you are in Singapore ? …………………………………………………………………………………………….. 2. Is it difficult to find the bus you want. ? ............................................................................................................................................. 3.Why does the writer prefer the underground ? …………………………………………………………….…………………………… XIn các bạn giúp mình giải bài với! Mình đang cần gấp

Có nên thay từ chết bằng nói giảm nói tránh ko?vì sao a)Cho lão chết!Ai bảo lão có tiền mà chịu khổ b)Nông Văn Vân chết trong rừng, cuộc khởi nghĩa kết thúc c)Sau cơn bão,cây cối trong vườn chết hết cả