`( - 5 )/11 . 7/15 . 11/-5 . ( - 30 )`
`= ( ( - 5 )/11 . 11/-5 ) . [ 7/15 . ( - 30 ) ]`
`= 1 . ( - 14 )`
`= - 14`
Đáp án:
`-14`
Giải thích các bước giải:
`(-5)/11. 7/15. 11/(-5) .(-30)`
`=((-5).7.11.(-30))/(11 . 15 . (-5) )`
`= (1 . 7 . 1 .(-2))/(1 . 1 . 1)` (Dùng phương pháp khử)
`= -14`
Làm nhanh hộ mình với P/s đừng làm tắ nhé :((( n/L: mình đặt câu này 3 lần ( 1 lần 30 điểm và 2 lần 40 điểm ) nhưng rồi hoidap xoá câu hỏi của mình không lí do và cũng không hồi điểm cho mình:)???
Mn làm giúp mình bài này với ạ mình cảm ơn ạ
Imagine you have bought something faulty. Write a formal letter of complaint (120 – 150 words) to the shop or website. Follow "writing strategy" and this writing plan *lm theo ảnh ở dưới ạ*
Trong bài thơ Thương thay thân phận.....nghe hình ảnh những con vật trong bài ca dao tượng trưng cho kiểu xã hội nào Cảm nhận của e về bài thân e như trái bần trôi.....vào đâu
I. Use a relative pronoun or relative adverb to combine each pair of sentences : 17. Vicky didn’t get the job. It’s made her very depressed. ……………………………………………………………………………………………… 18. My uncle usually goes to work by bus. You met him at the bus stop this morning. ……………………………………………………………………………………………… 19. That car belongs to Dr. Clark. Its engine is very good. ……………………………………………………………………………………………… 20. He gave several reasons. Only a few of them were valid. ……………………………………………………………………………………………… 21. Charlie Chaplin died in 1977. His films amused millions of people in the world. ……………………………………………………………………………………………… 22. The taxi driver is friendly. He took me to the airport. ……………………………………………………………………………………………… 23. I ran into a woman. I had gone to elementary school with her. ……………………………………………………………………………………………… 24. The house is empty now. I used to live there. ……………………………………………………………………………………………… 25. Do you remember the year ? The First World War ended in that year. ……………………………………………………………………………………………… 26. A girl was injured in the accident. She is now in hospital. ……………………………………………………………………………………………… 27. Mrs. Bond is going to spends a few weeks in Sweden. Her daughter lives in that country. ……………………………………………………………………………………………… 28. We stayed at the Grand Hotel. Ann recommended it to us. ……………………………………………………………………………………………… 29. My sister was looking after a dog. Its leg had been broken in an accident. ……………………………………………………………………………………………… 30. The street I live in is very noisy at night. This makes it difficult to sleep. ………………………………………………………………………………………………
Hoà tan a gam Fe vào dd H2SO4 đặc, nóng, dư thì thu được khí (A). Hấp thụ hoàn toàn A trong dung dịch có chứa 0,2 mol NaOH thì thu được 200 ml dd (M). Hãy tính giá trị của a trong mỗi trường hợp sau: 6.1 Trong (M) có 2 muối với số mol bằng nhau. 6.2 Trong (M) CM NaOH = 0,2M C=12 H=1 O=16 Mg=24 S=32 Cu=64 Al=27 Na=23 Cl=35,5 Fe=56 Giúp mình với ạ !,!,,!
I.Change these sentences into the passive voice. 1. What did you do to solve this problem? 2. I heard someone singing in the next room. 3. She is having her sister iron her clothes. 4. People say that three men were arrested after the explosion. (2 cách) 5. By this time next year, Hong will have finished the course.
vì sao sống cống hiến làm cho cuộc sống của bản thân ý nghĩa hơn
I. Put the following sentences into Reported Speech. 1. “I have already read your letter,” my friend said to me. My friend said 2. Carol said to me, “I will tell you about that problemCarol told 3. He said, “I don’t understand these two lessons at all.” He said (that) 4. “I know this girl quite well,” Mary said.Mary said 5. Tom said to me, “I have to leave the office before 3.00 p.m.” Tom told 6. “I don’t like this film,” she said 7. George said, “I can’t possibly finish the work by that time.” 8. Mr. Anderson said “I’m having a bath,” 9. “Mr. Brown said “I must do my homework now,” 10. “Your health will improve very quickly,” the doctor said to me
Trong bài thơ thân em...như bần trôi hình ảnh những con vật trong bài ca dao tượng trưng cho kiểu xã hội nào
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến