Biết AM song song với Bn, góc mAc bằng 50 độ, góc CBn bằng 40 độ. Tính góc ACB bằng cách sử dụng tính chất góc ngoài của tam giác

Cho 20g đồng (II) oxit vào một lượng dd H2SO4 19,6% lấy dư sau phản ứng thu được dd X trong đó nồng độ muối là 16%. a)Đã lấy mấy gam dd H2SO4? b)Tính nồng độ % axit trong dd X .

Bài 5: Dùng từ gợi ý sau để viết thành câu hoàn chỉnh. 1. morning/ I/ Tam/ this/ Lan 2. Hi/I /Hai/ this/ Van. 3. afternoon/ name/ Hung/ this/ Hoang. 4. Hello/ Long/ I/ Hoa/this/ Nam/ and/ this/ Nga 5. How/ you/ ? – I/ fine/ thanks. 6. morning/Miss Ha/name/ Ba/ this/ Phong. 7. after noon/ children/ name/ Nguyen Van An/ How/ you/ ? 8. afternoon/ teacher/ we/ fine/ thanks. 9. Hi/ Bao/ how/ you/ ?/ 10. Hello/ Luong/ this/ Lan, my friend/ she/ a new student/ my class. mik cần gấp nhé

mọi người giải hộ em câu này với ạ em cần gấp

Bài 3: Cho hình thang cân ABCD (AB // CD, AB > CD) có , . Đường chéo AC vuông góc với cạnh bên BC. a) Tính các góc của hình thang. b) Chứng minh AC là phân giác của góc . c) Tính diện tích của hình thang.

làm hộ mình đi mà I. Read about Ewan McGregor in his fan’s blog and choose A, B, C or D for each of the gap to complete the following passage. Ewan McGregor was born in Scotland in 1971. He decided to be an actor when he was only nine and he (1)……… his first film in 1992. So far in his career he has (2)……… in a lot of different types of films, including comedies, musicals, dramas and the Star Wars movie. His uncle, Denis Lawson, was in the original Star War in 1977 and McGregor (3)……… in his first Star Wars movie 22 years later. In his career Ewan McGregor has worked with actresses like Cameron Diaz and Nicole Kidman, and his films have won lots of (4)……… . He loves acting and when he finished (5)……… the musical, Moulin Rouge , he said, “ I have never been happier to do anything in my life.” 1. A. made B. played C. worked D. starred 2. A. attended B. appeared C. joined D. participated 3. A. acted B. performed C. starred D. took 4. A. profit B. money C. presents D. awards 5. A. filming B. film C. to film D. filmed II. Choose the correct word A, B, C or D for each gap to complete the following passage. When you are (1) __________Singapore, you can go about by taxi, by bus, or by underground. I myself prefer the underground because it is fast, easy (2) __________ cheap. There are buses and taxis in Singapore and one cannot drive along the road quickly and without many stops, especially on the Monday morning. The underground is therefore usually quicker (3) __________ taxis or buses. If you do not know Singapore very well, it is difficult to find the bus you want. You can (4) __________ a taxi, but it is more expensive than the underground or a bus. On the underground, you find good maps that tell you the names of the stations and show you (5) __________ to get to them, so that it is easy to find your way. 1. A. at B. in C. by D. with 2. A. and B. but C. so D. or 3. A. so B. like C. as D. than 4. A. get B. take C. go D. look 5. what where how why

7) the film was frightening Wasn't...................

IX. Choose the correct answers to complete the passage. Jalan Hang Jebat, or (1) known as Jonker Walk, is a street in (2) Chinatown of Melaka starting just across the river from the Dutch Square. Jonker Walk is flanked on (3) sides of the road with heritage houses dating (4) to the 17thcentury. At that time, rich Baba Nonyas (also known as Perankans, descendants of 15th - 16th century Chinese immigrants marrying local Malay women) lived and (5) their business here. Today, the street houses many shops selling antiques, textiles, (6) and souvenirs (similar to what you can find at Central Market in Kuala Lumpur). On the weekends, starting Friday night at 6pm, the road is closed (7) to traffic and turns in a very crowded night market. The famous Chicken Rice Ball dish (8) also be found here, just opposite the start of Jonker Walk near the bridge. 1. a. common b. commonly c. commony d. commoned 2. a. history b. historic c. historical d. historically 3. a. both b. each c. every d. very 4. a. in b. back c. on d. for 5. a. lived b. made c. did d. put 6. a. cars b. handicrafts c. houses d. rice 7. a. after b. in c. out d. off 8. a. must b. should c. might d. can Nhớ giải thích ạ!

Cho hình vẽ, biết góc ABC = 120°; góc BCD = 30°; góc CDE = 150°. Chứng kinh AB // DE

VII. Mark the letter A, B, C or D to indicate that underlined part that needs correction in each of the following sentences. 1. As soon as I know, Nga Son mats village has existed for more than 150 years with many ups A B C D and downs. 2. Tho Ha village gate has nice, large and antique architecture making by skillful hands of the A B C village’s craftsmen. D 3. Chinese Painting became popularly around 581 AD since more and more people began A B C to appreciate its beauty. D 4. In order that promote the development of the craft village, more support from local authorities A B C is needed. D 5. Careful planning is very important to help craft villages growing and flourish to attract more A B C tourists to the country. D 6. All families in Phuoc Tich village earned their living from making ceramics for the past 500 A B C D years. 7. Some of the most excited architecture in Britain can be found in Manchester and the nearby A B C D Salford Quay’s area. 8. Artisans in the traditional craft village are facing difficulties in seeking markets for their A B C product. D Nhớ giải thích ạ!