từng đôi 1 trong tam giác nghĩa là gì ạ (toán tam giác)

Vẽ về chủ đề đáng nhớ trong tâm tư mọi người Cảm ơn

Câu 1:Hãy mô tả thuật toán tìm số nhỏ nhất trong dãy A các số a1,a2,...,an cho trước Câu 2:Tìm lỗi sai và sửa trong chương trình sau: Begin Program vd Uses crt; Clrscr; Writeln ('Chao cac ban!') End. readln

Viết văn lập luận chứng minh “ bảo vệ môi trường là bảo vệ cuộc sống của chúng ta “

ai giải giúp mình với mình cần gấp pls

Giúo mình vs ạ. Mình cảm ơn nhùi nhùi nhùi💓💓

Bài 20: Tìm x ∈ Z : a) (x ² + 1).(49 - x ²) = 0 b) (|x| + 2).(6 - 2.|x|) = 0 Bài 21 : Tìm x ∈ Z : a) (x - 2)(7 - x) > 0 b) (x ² - 13)(x ² - 17) < 0 Giúp mik 2 bài này!

Choose the word that has a different main stress from the others. 3. A. televison B. library C. dictionary D. magazine 4. A. enjoy B. open C. visit D. offer Choose the best answer (A, B, C, or D) for each sentence. 5. I’m meeting Tom tonight; it will be the first time I________ him since Christmas. A. saw B. will see C. have seen D. see 6. The exam was quite easy; we expected it to be ________ . A. as easy B. easier C. difficult D. more difficult 7. International school in Hochiminh City is the ____________ school in Vietnam with high-tech facilities. A. youngest B. oldest C. most historic D. most modern 8. Have you ever ____________ to Manschester. A. be B. been C. being D. will be 9. She likes sports. She always ____________ aerobics every day. A. does B. do C. have D. has Find a mistake in the four underlined parts 10. Did you ever tasted Vietnamese noodles called Pho? A. Did B. tasted C. Vietnamese D. called 11. China is the country with the larger population. A. is B. with C. larger D. population Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. 12. Jenny is a kind girl; she always helps other people. A. harms B. stops C. hurts D. supports Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. 13. Thanks to the development of tourism industry, the citizens in this area became more wealthy. A. rich B. famous C. poor D. luxurious Choose the letter A, B, C, or D to complete the passage below. Television is one of (14) _________ inventions of human beings. Today we can find television almost everywhere (15) _________ the world. The first television was invented in 1927 by a 21 years old inventor – Philo Taylor Farnsworth. Watching television is both recreational and informative. There are some news programs for adults (16) _________ information. There are also tutorial channels based on specific subjects for the students. (17) _________, it’s harmful to spend too much time watching television. Some shows are too violent for the children to watch because they may imitate. 14. A. greater B. the greatest C. great D. greater than 15. A. on B. of C. by D. in 16. A. to get B. getting C. get D. to getting 17. A. Because B. Although C. And D. However Choose the letter A, B, C, or D to answer these following questions. The place where I live is a village. It is called North Thoresby. North Thoresby used to be a big village, but now it is quite small. These days, only about four hundred people live here. A lot of families have left the village. They have gone to work in larger towns and cities where there are mors jobs. I like our village because it is small and quiet. But my older sister doesn't like it. It isn't exciting enough for her. She prefers to live in a large city, where there are more cinemas and discos and teenagers. 18. North Thoresby ___________. A. is a city B. is a village C. is the place where the author lives D. B & C are correct 19. Nowadays, _____________________. A. Only about four hundred people live in North Thoresby B. North Thoresby is a big village C. North Thoresby has a lot of cinemas and discos. D. A & C are correct 20. What does the word "they" in bold refer to? A. villages B. days C. jobs D. families 21. Which of the following is NOT TRUE? A. The author's sister doesn't like to live in North Thoresby B. The author likes to live in larger cities because there are more jobs in the city C. The author's sister prefers to live in a large city D. Many families have left the village Choose the letter A, B, C or D to complete the sentences with given words 22. Students/ do/ lot of/ outdoor/ activity. A. Students do a lot of outdoor activities. B. Students does a lot of outdoor activities. C. Students doing a lot of outdoor activities. D. Students are do a lot of outdoor activities. 23. I/ more/ interested/ go swimming/ my sister. A. I more interested at going swimming than my sister. B. I am more interested at going swimming than my sister. C. I more interested in going swimming than my sister. D. I am more interested in going swimming than my sister. Rewrite sentences without changing the meaning 24. The last time we saw John was in 2010. A. We haven’t seen John since 2010. B. We have never seen John before. C. We have seen John years ago. D. We haven’t seen John for 2010. 25. The film is not exciting enough for me to see. A. The film is not boring enough for me to see. B. The film is so exciting that I don’t want to see. C. The film is too boring for me to see. D. The film is such an exciting one that I want to see

Mọi người giải giúp mk bài 4 với ạ

Giúp mình với mình cần và rất gấp Cảm ơn nhìu