a= 1+2+2^2+2^3+...+2^2019 1 Tàu hỏa cần chở 872 khách tham quan . Biết rằng mỗi toa có 10 ngăn , mỗi ngăn có 6 chỗ ngồi . Cần ít nhất mấy toa để chở hết số khách tham quan ?

cho a/3=b/5=c/2 và 2a+3b-9c=18. Tìm a,b,c các bạn giúp mình nha, cảm ơn các bạn nhiều :333

Các Lĩnh vực cụ thể trong giao hữu giữa Việt nam với nước ngoài

Ke lại chuyện sự tích hồ gươm giúp e với

viết công thức hóa học của axit cacbonic, đường glucozo

cho 27,9 gam anilin tác dụng vừa đủ với axit hcl khối lượng muối thu được là

Một phép chia có thương bằng 6, số dư la 4,số chia la 8.tim số bị chia

Giúp với do ko có thời gian làm

Tìm số bị chia. Cho biết thương là 6 số chia là 8 dư 4

1. Put the verbs brackets in the correct verb form. Kevin O'Donnell works in Hollywood. He records sound for films. He (1. work )____________on his first film in 1980 : Star Wars. He's now 51 and he (2. help )__________to make more than 100 films in 1983, he (3. do )_________the sound on the film called Terms of Endearment. The film ( 4. win )__________five Oscars, but O'Donnell ( 5. not win )_________one. He ( 6. be )_________at the Oscars in 1983 when he was only 26. Now, he ( 7. be )_________to the Oscars 20 times. he has worked on Top Gun, Terminator 3, Spider - Man, Transformers and other great films, but he ( 8. not win )________an Oscar yet. He ( 9. write )_____________20 speeches so far, but ( 10. never given )__________one. The speeches are in a drawer in his house. Kevin doesn't mind. He knows the sound in his films ia amazing. He's going to win - one day ! 2. Rewrite the sentences using " not as.....as". 1. Football is more exciting than rugby. Rugby isn't__________________________________________________________ 2. Indonesia is hotter than Viet Nam. Viet Nam_____________________________________________________________ 3. French is easier than German. German_______________________________________________________________ 4. Anita is friendlier than Alice. Alice___________________________________________________________________ 5. The hotel in london was better than the hotel in Paris. The hotel in Paris_______________________________________________________ 3. Complete the text using the correct comparative form of the adjective or "as.....as" I think Johnny Depp is a ( 1. good )_____________actor than Keanu Reeves. Depp is also in (2. interesting )______________and (3. exciting )____________films than Reeves. In Constantine, for example, Reeves was ( 4. bad )___________than in any other film. I think that Depp was ( 5. good )__________in Finding Never land. Maybe The Secret Window or From Hell were ( 6. thrilling )____________, but they were not (7. interesting )___________Finding Neverland. I think most Hollywood actors are not ( 8. good )_________Johnny Depp.