Cho biết Nam Mỹ được chia làm mấy khu vực địa hình Nêu đặc điểm của mỗi khu vực địa hình

Mình đặt câu hỏi nhiều lần nhưng ko thấy ai trả lời! Mình mong các bn giải hộ mình! Tính bằng 2 cách nha! Thật đầy đủ 6 ý nhé! Mình cám ơn !

quy đồng mẫu các phân số sau a,3/8 và 5/27 b,1/15 và -6 c,11/120 ; 7/40 ; -90 ; 5/20

Bài 1 a, 2x^2-(1-2√2)x-√2=0 b,1/3x^2-2x-2/3=0 Bài 2 tìm m để phương trình 3x^2+(m+1)x+4=0 có nghiệm kép

Giúp mình với ạ😭 mình cảm ơn🤝

Cho tam giác ABC có ba góc nhọn nội tiếp đường tròn (O) , đường cao AH. Kẻ đường kính AE. Tính góc ACE. Chứng minh rằng góc BAH và góc OAC bằng nhau. c) Gọi K là giao điểm của AH với đường tròn (O). Chứng minh BK = CE.

em thật sự cần rất gấp, mọi người giúp em với ạ

Mọi người ơi, tuần sau mình phải nọp bài văn rồi nhưng chủ đề này mình không biết phải làm thế nào để mở bài hay. Mong mọi người hướng dẫn và giúp mình để mình tham khảo được không ạ. Chủ đề: "Nghị luận về hình ảnh người anh hùng giữa đời thường " ạ

Làm giúp mik ai làm bừa = báo cáo tkss mn nhiều ạ My son is moving out this weekend. I hope he'll ............ taking care of himself. * 1 điểm used to is used to get used to Mr. Wilson ............ a policeman when he was young. * 1 điểm was used to be is used to being used to be I ............ walk to school. My parents always drove me to school. * 1 điểm didn't get used to didn't use to wasn't used to We didn't understand the accent when we first moved to Australia but we quickly ............ it. * 1 điểm didn't use to used to got used to Harry always does everything on his own. He ............ with other people. * 1 điểm didn't used to working isn't used to working doesn't get used to work Find the mistake in this sentence: "I didn't used to live in the countryside, but I think I will get used to living there soon." * 1 điểm didn't used to live to living Sally is used ............ hours in front of the computer every day. * 1 điểm to spend to spending spent People ............ that the Earth was flat. * 1 điểm is used to believe got used to believing used to believe I ............ him but now we are good friends. * 1 điểm don't get used to liking didn't use to like wasn't used to like There ............ a banyan tree at the entrance of my village long ago. * 1 điểm used to be was used to be used to have Did you ............ to the circus when you were a kid? * 1 điểm used to going use to go get used to going Find the mistake in this sentence: "It took me quite a long time getting used to wearing these glasses." * 1 điểm took getting wearing Find the mistake in this sentence: "European drivers find it difficult to get used to drive on the left when they visit Britain." * 1 điểm find it difficult to get to drive

15."Diana is a wonderful ballet dancer". "She_____ since she was four". a. has been dancing b. has been danced c. is dancing d. was danced 16."Those eggs of different colors are very artistic". "Yes, they_____ in Russia". a. were painted b. were paint c. were painting d. painted 17. Gold_____ in California in the nineteenth century. a. was discovered b. has been discovered c. was discover d. they discovered 18. All planes_____ before departure. a. will checked b. will has checked c. will be checked d. will been checked 19. I wanted_____ by the head of the company, but it was impossible. a. to see b. to be seen c. seeing d. being to see 20. Katherine_____ at Bob's house every night this week. a. has been eaten b. has eating c. is being eating d. has been eating