Lập bảng so sánh cấu tạo hệ hô hấp, tuần hoàn, têu hoá, sinh dục của động vật có xương sống ( từ cá -> lưỡng cưv-> bò sát -> chim -> thú)

tìm x biết : (-x+1)^4 = (x+1)^6

Giúp mik mấy câu này với. Mik cần gấp

Complete each sentence so it means the same as the sentence above. 1. I started playing soccer 5 years ago. => I have................................................. 2. Jack í 13 years pld and my son it, too. => Jack is................................................. 3. Mary was sick so she could not go to school. => Because............................................. 4. The last time I met him was 3 years ago => I haven't............................................. 5. Lan went out because she finished her homework.(so) => Lan..................................................... 6. He is interested in doing morning exercise. => He enjoys.......................................... 7. We have learned English for 3 years. => We started...................................... 8. We started to live here in 2012. => We have........................................ 9. Her book is not the same as mine. => Her book is.................................... 10. You should walk around the Old Quarter at night. => It's a good idea to........................................

Thu gọn các biểu thức sau: √23 -4√33 - √18+2√77

I. CIRCLE THE LETTER A,B,C OR D TO INDICATE THE CORRECT ANSWER TO EACH OF THE FOLLOWING QUESTIONS. 1. Nam usually _________ football with his friends after school. A. has B. plays C. learns D. does 2. -What is he doing? - He _________ homework in his room now. A. do B. does C. is doing D. doing 3. There _________ a book, a computer and some pens on my desk. A. is B. are C. be D. have 4. Lan is a _________ girl. She doesn't talk much when she meets new friends. A. confident B. talkative C. sociable D. shy 5. There is a lake _________ my house. A. next B. next to C. between D. on the right 6. -What does your aunt look like? - She _________ tall and she _________ a round face and long hair. A. isn't - have B. is - have C. isn't - has D. don't - have 7. Mai's _________ colours are yellow, blue and white. A. loves B. dislikes C. likes D. favorite 8. Look! The girl is _________ badminton in the schoolyard. A. dancing B. playing C. doing D. skipping 9. How many students _________ in your class? A. have B. is there C. are there D. there are 10. . - "What would you like to drink now?" - "_________" A. No, thanks B. Yes, please C. I like to do everything D. Coffee, please

cho tam giác ABC vg cân tại A. vẽ ra phía ngoài tam giác ABC, tam giác ACD vg cân tại D. a) tứ giác ABCD là hình j, tại sao b) tính diện tích ABCD biết AB= 2cm các bn giúp mk vs ạ, hứa sẽ vote 5*

Giúp mình caau 3 vs ạ...cảm ơn j..mình đang cần gấp lắm ạ

Vẽ chibi cute nha (ko phải đậu mầm hay mèo ú..... đâu nha) Ngoài lề : ai muốn làm BFF của tui ko, rồi đặt avatar này luôn nhé

mn ơi giúp e vs ah e đcaafngaasp e cảm ơn nh ạ