x:13,25-x:3,25=2,5 giúp em vs

Chứng tỏ tổng A bằng 2 mũ 1 cộng 2 mũ 2 cộng 2 mũ 3 cộng 2 mũ 4 cộng ... cộng 2 mũ 59 cộng 2 mũ 60 chia hết cho 3 , 7 , 13.

Giải giúp vs ạ hứa vote 5 sao gấp 😭😭😭🙏

tìm giá trị nhỏ nhất của biểu thức A=2x^2 - 4x + 7

I. Circle the most suitable word or phrase to complete the sentences below. 1. You must. A. keep silent B. to keep silent 2. Shall we go.. .bicycle? A. with 3. What shall we .......this evening? A. does B. to do 4. Can I .....your book? A. borrows II. Find the word which has a different sound in the part underlined. 9. A. city 10. A. advice 9. a. home 10. a. lunch 11. a. cat 12. a. books 13. a. cook 14. He listens.......music every night. a. for b. of 15. There is a big yard...front......the house. a. at b. on c. in 16. There ..in class. C. keeping silent В. on D. keeps silent C. by C. doing C. to borrow D. at D. do B. borrow D. borrowing B. cathedral C. central D. cinema B. price C. nice D. police b. go b. up b. breakfast b. shops b. clean C. sport c. number c. read c. hats c. celebrate c. to d. about d. old d. literature d. teacher d. tables d. candy d. to ... a cinema and two shops near my house. c. is a. have b. has 17. My new school a. has d. are ... many trees and rock chairs on the yard. b. does 18. My house is not far c.have d. is my school. a. near b. from c. in 19. My mother buys me a. the 20. Mrs. Ann d. on ..uniform on the first day of new school year. d. these b. an c. a ..a long beautiful dress now. a. wears b. wearing c. is wearing d. wear 21. You'd better .. to school on time. a. goes b. go 22. Nick a. travel 23. Would you like to drink tea? a. no, thanks 24. We (not/ go) 25. (He/have).... 26. Mr. Ba (not work)..... 27. Students must (clean). 28. Mike shouldn't (stay).... III. Read the passage .Then answer the questions. c. to go to Da Nang city by train every year. b. traveling c. to travel d. travels b. no, sorry d. of course C. no, not now To school on Saturday. ..lunch at school? ..here. He (work).... ..in a factory on Le Loi street. .the classroom everyday. up late. lo, My name is Linh. I live in the country side with my father, my mother and my brother Minh. My house is next to small market. In my neighborhood, there is a temple, a lake and a store. There are many trees and flowers around my house. My father is a farmer. He works on the farm. My brother is a student at Tran Quang Dieu School. And my mother does the housework at home. 1. Where does Linh live? 2. How many people are there in her family? 3. Is her house next to a book store? 4. What are there around her house? 5. Does her brother study at Tran Quang Dieu School? IV. Complete the sentences with the correct form of the adjectives in the brackets. 1. Mount Everest is the 2. Ha Long Bay is.. 3. Traveling by bus i.. ..mountain in the world. (high) than Phu Quoc Island. (famous) than by taxi. (cheap) than Mekong River (long)

đặt câu noisy ; noisily : đặt mỗi từ 1 câu careful ; carefully : đặt mỗi từ 1 câu

thực chất về việc biến đổi các chất sau tiêu hóa ở ruột non ? vì sao những tài xế đường dài thường mắc bệnh đau dạ dày

Một người đi xe đạp, đoạn đường đầu đi 10km với vận tốc 8m/s. Đoạn đường thứ hai đi 8,5km hết 20 phút. Tính vận tốc trung bình đi cả quãng đường.

VIẾT LẠI CÂU VẪN GIỮ NGUYÊN NGHĨA 1) This is the first time i have ever eaten this fish.

14. If Peter were late, he would be punished. > Were..... 15.He will catch the first bus, he will come on time. > Should... 16.I don't know her email address, so I can't tell you >If.... 17.I can't play football this afternoon because I feel tired >If ... 18.She work in the morning. She has no time to watch TV >If. 19.He doesn't have a watch. He's always late for work >Were 20.1 am not tall, so I can't join the basketball team. →Were.... 21. Jack was late the party because his watch was 5 minutes slow >If..... 22.Sam didn't know the highway was closed, so he didn't take another roa >Had .... 23. Because I lost my key, I had to wait my roommate >Unless 24. We are tired today because we went to bed late last night >If.... 25. I didn't know you were in hospital. I didn't visit you >If... 26. He didn't ask me to keep the news secret so I told Ann >Had... 27. They played the music loudly, I didn't hear what he said >If..... 28. He didn't prepare for the interview so he didn't get the job. >If.. 29. We came home from our holiday early because we ran out of money. Unless 30. The house didn't burn down because the fire brigade came immediate >If.... Ai giải dùm với mik gấp lắm xin cảm ơn !