Công thức:
Nếu ad=bc và a,b,c,d $\ne$ 0 thì ta có các tỉ lệ thức:
$\dfrac{a}{b}$=$\dfrac{c}{d}$, $\dfrac{a}{c}$=$\dfrac{b}{d}$, $\dfrac{d}{c}$=$\dfrac{b}{a}$
$\text{Xin hay nhất~~}$
cali: Chán học nl: vừa sáng ra đã phải học r chán quáaaaaaaa
giúp mik vs mk đang cần gấp đúng mik tặng 5 sao
chỉ cần kết quả ko cần giải thích
Yesterday the police _______ (report) that they _______ (capture) the thief. 2. The Browns _______ (live) in Paris for 7 years when the second World War _______ (break) out. 3. Last month I _______ (be) in the hospital for 10 days. 4. Columbus _______ (discover) America more than 400 years ago. 5. What you _______ (do) yesterday? 6. You _______ (watch) TV last night? 7. She _______ (be) born in 1980. 8. I went to the box office at lunch time, but they...................(already/ sell) all the tickets. 9. I felt very tired when I got home, so I ..................... (go) straight to bed. 10. I felt better by the summer, but the doctor warned me not to do too much. I ........ (be) very ill. 11. 'Was Tom at the party when you arrived?' 'No, he .................(go) home.' 12. After she ................. (fill) the basket.................. (go) to the check out. 13. Yesterday morning I........................ (remember) the answer t the question. Bob............ (ask) me the night before, so I .............. (phone) him. 14. Angel asked me how to use the photocopier. She .................... (never/ use) it before, so she................ (not/ know) 15. Two days a go I................ (meet) an old friend who I ................ (not see) for years ................. (write) a report on it.
hãy viết đoạn văn về bất lợi của làng nghề truyền thống giúp em với ạ:((
Giúp mình với ạ S= 1+ √x √x
1. Malaysia is divided.....................two regions. A. to B. in C. into D. at 2. She often goes to the..........to pray because her regions is Islam. A. church B. pagoda C. temple D. mosque 3. Mary was really.............by the beauty of Hanoi. A. impress B. impression C. impressive D. impressed 4. I wish Susan...............harder for her examination. A. will work B. worked C. has worked D. works 5. The United State has a..............of around 250 million. A. population B. separation C. addition D. introduction 6. The 'ao dai' is the...............dress of Vietnamese women. A. beautiful B. traditional C. casual D. baggy 7. He...............with friends in apartment in HCMC since last week. A. living B. has lived C. lived D. live 8. Mathematics and Literature are..............subject in high schools. A. adding B. compulsory C. optional D. religious 9. The word Jeans comes..............a kind of material that was made in Europe. A. in B. at C. from D. on 10. There is a meeting..................9 AM and 2 PM. A. on B. between C. till D. at 11. He was born..............15th, January. A. in B. of C. at D. on 12. We have lived in Hanoi............... 4 years. A. in B. since C. for D. at 13. What aspect of................ English do you find difficult? A. study B. studied C. learnt D. learning 14. Who told you of the news? The.............. may not be correct. A. inform B. information C. informational D. informative 15. She thinks chatting on the Internet is time................... A. consume B. consumer C. consuming D. consumption 16. I wish they ………here tomorrow. A. will come B. would come C. came D. to come 17. John ……… write the letter to me last year. A. is used to B. was used to C. used to D. used 18. It is difficult ……… English in some weeks. A. to speak B. speaking C. speaks D. speak 19. The capital of Malaysia is……….. A. Hanoi B. Paris C. Kuala Lumpur D. Seoul 20. An wishes that he ………… his parents. A. would visited B. can visit C. could visiting D. could visit giúp em nha mng ơi
giúp em với mọi người câu này em không biết làm
1. We _______ (not/ have) a holiday last year. 2. My friend is a writer. He _______ (write) many books. 3. I _______ (play) tennis yesterday afternoon. 4. What time _______ (you/ go) to bed last night? 5. Kathy travels a lot. She _______ (visit) many countries. 6. You ever _______ (meet) a famous person? 7. The weather _______ (not/ be) very good yesterday. 8. My hair is wet. I just _______ (wash it. 9. The town is very different now. It _______ (change) a lot. 10. I did German at school, but I _______ (forget) most of it now. 11. He _______ (write) a book since last year. 12. Mr.Green _______ (teach) English in this school since he _______ (graduate) from the university in 1986. 13. Mr.Jone _______ (be) principal of our school since last year. 14. Mr.Smith _______ (teach) at this school since he _______ (graduate) in 1980. 15. I _______ (meet) Arthr three weeks ago.
Cho em xin vài công thức về lũy thừa ở lớp 6 vs 7 ạ
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