Bài 1. Cho tam giác FDE có DI vuông góc FE tại I . Biết DF bằng 20 cm,EI bằng 9 cm a) Tính độ dài IF , ED và chu vi tam giác FDE.

Anh chị giúp em từ câu 13 đến câu 17 với ạ Em cảm ơn ah

. Tìm một số tự nhiên có 3 số ,tổng các chữ số =17 chữ số hàng chục là 4 nếu đổi chữ số hàng trăm và hàng đơn vị cho nhau thì số giảm đi 99 đơn vị

Cho ΔABC vuông tại A có B= 60 độ và AB=5cm. Tia phân giác của góc B cắt AC tại D. Kẻ DE ⊥với BC tại E. a,Chứng minh ΔABD= ΔEBD. b,Chứng minh ΔABE là tam giác đều. c,Tính độ dài cạnh BC. Mọi người ơi, giúp mình câu hỏi này nha!!

Ai giúp mình bài 4 đc ko mình cảm ơn

Viết đoạn văn quy nạp nêu cảm nhận của em về con hổ. Trong đoạn văn có sử dụng câu đặc biệt. (Gạch chân, chú thích). Giúp mình với! Mai nộp rồi!>.<

Vì sao nước ta có giá trị nhập khẩu lớn hơn giá trị xuất khẩu

Các cao nhân nơi nào giúp em ạ!

Hãy viết một đoạn văn ngắn (8-10 câu) chủ đề tự chọn, trong đó có sử dụng phó từ. Gạch chân dưới các phó từ (Giúp mik vs. Không đc lấy trên mạng nha)

IV. EXERCISES A.PHONETIC Exercise 1: Find the word which has a different sound in the part underlined. 1. A. there B. weather C. thanks 2. A. thirsty B. throw C. there 3. A. then B. their C. think 4.A.although B. worth C. mouth 5.A.tooth B. breathe C. warmth B.LANGUAGE FOCUS. Exercise 1:Choose the best answer 1. ………………is on TV tonight?- Tom and Jerry. (When/ Who/ What) 2. ………………do you watch TV? – Twice a day (When/ How often/ How) 3.…………….hours do you watch TV a day? About 1hour. (When/ How many/ How often) 4.…………….…do you like this program?- Because I love animals. (Why/ How/ What) 5.………….was that film made? – I don’t know. But I first watched it on TV last year. (When/ Where/ How) 6.. ___________ do you like the Modern English programme? Because it helps me with my English.( Why/Who/ When) 7.If you want to know which film is on tonight, check the TV___________ ( programme/ information/ schedule) 8. Watching too much TV is not good for your health___________it hurts your eyes. ( because/ so/ but) 9. ___________are films by pictures, not real people and often for children. ( Documentaries/ Detective films/ Cartoons) Exercise 2: Fill each blank with a word/ phrase in the box. go/chess/camping/cooking/music/gymnastics/books/dolls/ bottles/ fishing 1. I like …........... I usually play against my brother. I also play against other people on the Internet 2. My younger sister likes collecting . Now she has more than 50 …............ 3. I'm interested in …........... . My idol is My Tam. 4. My girl friend likes doing …..........., so she has a nice body. 5. I never …........... skiing. 6.He likes reading …........... His favorite writer is Van Cao. 7. My hobby is …........... with my friends when I have some days off. 8. My family usually goes…........... on weekends. 9. He likes collecting , especially …........... glasses. 10. My mother likes …........... . She can cook lots of delicious dishes. C.READING Exercise 1: Choose the correct answer A, B, C or D to fill each blank in the following passage. Nowadays, television becomes very popular. Both old and young people (1)…………. watching it very much, TV programs attract millions of (2)………….. all around the world. In addition to the news television stations also broadcast many interesting programs such (3)………sports, music, cartoons, wild life, popular science, reports, contests, movies, etc. At present, people (4)…………..enjoy a live program on TV. Live program helps us (5)…………events at the same time as they are happening. 1. A. like B. relax C. take 2. A. guest B. viewers C. audiences 3. A. that B. are C. as 4. A. must B. can C. can’t 5. A. broadcast B. listen C. see Exercise 2: Read the article and then decide whether the statements are true (T) or (F). After school Kien usually goes swimming. He goes to the swimming pool five times a week. His swimming pool is very good. The pool is 25 metres long and has six lanes. More than a thousand children have swimming lessons there every month. His swimming instructor is experienced and friendly, but she is also strict. Lessons last 45 minutes, but he usually trains for an hour and a half. During the lesson he swims about two kilometers. His favourite swimming styles are crawl and backstroke. He practices a lot to improve his swimming skills. He wants to achieve good results. Last month he participated in a swimming competition. Ten swimmers from three schools took part in the competition. He won first prize. Swimming is his favourite sport. Swimming is interesting and pleasant, and it helps him to keep fit. True or False? 1. Kien goes to home after school. 2. He practices swimming five times a month. 3. His swimming instructor is strict. 4. He swims about five kilometers during the lesson. 5. He won the first prize in the swimming competition. D. WRITING Exercise1: Put the words in the correct order 1. do/you/go/ how often/ running/? 2. Europe/ the Royal Palace/ largest/ one/ is/ the/in/of/palace. 3. weather/ we/ today/ can’t/ is/go/ bad/swimming/because/ the/ 4. TV/ best/ what/ do/ like/ programme/you/? Exercise 2:Write about your TV watching habits 1. How many hours a day do you watch TV? 2.How do you compare the time you spend watching TV to the time you spend on outdoor activities? 3.Do you watch TV when you are eating / entertaining / reading ? 4.What kind of programme do you watch most? Why? 5.Do you leave your TV on when you are not watching it? 6.Do you think you have good/bad TV watching habits? ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… THE END