Giải phuơng trình: $\sqrt[3]{5x+7}-\sqrt[3]{5x-13}=1$ Ngắn gọn nha

Cho 1,5g khí hidrocacbon X tác dụng với lượng dư dd AGNO3/NH3 , thủ được 7,92 gam kết tụa vàng nhạt .Mặt khác , 1,68 lít khí X (đktc) có thể làm mất màu tối đa V lít dd Br2 1M .giá trị của V là

Tìm x:x+27=9 (quy tắc chuyển vế)

Giúp mình với!! Cho hình thang vuông ABCD ( Â = góc D= 90 độ). Gọi E là điểm đối xứng với C qua AD, I là giao điểm của BE với AD. a) Chứng minh ID là tia phân giác của góc CIE b) Tia CI cắt AB ở F. Chứng minh F đối xứng với B qua AD

I. Put the correct form of the following verbs in the correct blanks to complete the letter. Dear Ha, not get back take decide find hire dive do arrive get up not be stop go Hi, I‟m on holiday in Nha Trang with the Robinson. We ..................... (1) last Saturday. The first day the weather ..................... (2) very nice, so we ..................... (3) some sightseeing. I .................. (4) lots of photographs. On Monday, we .................. (5) a car and .................. (6) out into the country. We ..................... (7) for lunch at a lovely little village and then in the afternoon we ..................... (8) a beautiful beach. Last night ................... (9) to the cinema. We ............... (10) till about 11p.m, so we ......... (11) late this morning (12) …………to have a relaxing day by the hotel swimming pool. So that‟s where I am now. Love, An II. Read Leo's report about his favourite sport. Choose the correct answer A, B or C. "Water polo is a new sport at our school, but we have a good team now. We practise after school on Thursday at the Northside Pool and we're doing well in the National Schools Competition. There are seven players in a water polo team. The game is a bit like football because each team tries to score a goal with a ball. But in water polo you don't use your feet - you catch and throw the ball with one hand. And you never stop swimming. A game lasts 32 minutes, and in that time you swim up and down a 30-metre pool lots of times. If you aren't fit, water polo isn't the sport for you! For me, it's great, because I love being in the water and I can swim fast. I also enjoy being part of a team. We have some excellent players and we're all good friends. So it's fun, and it's also a fantastic way to get fit." Leo Johnson 1. People play water polo . A. in a stadium B. in a swimming pool C. at the beach 2. His team plays . A. well B. badly C. in a new competition 3. Water polo players . A. often play football B. bounce the ball C. doesn't kick the ball 4. In a water polo game, players . A. can't use their hands B. sometimes swim 30 metres C. swim all the time 5. Leo . A. isn't very fit B. can swim quickly C. likes playing individually

a (317+49)-117 b (1978+285)-387 c 867-(167+98) d 1637-(137-97)

1. Một miếng bìa hình tam giác có cạnh đáy 8,5 dm, chiều cao bằng 2 phần 5 cạnh đáy . Hỏi diện tích của miếng bìa là bao nhiêu ?

Mn ơi đây là phần tiếp theo của bài 2 lúc nãy mn giải hộ em với ạ!

gải dùm mik với giả hết bài luôn nha

make sentences using the words and phrases given 1.Road users/ very impatient/ quite aggressive/ constantly using their horns/ even shouting/ others. 2.Three or four people/ one motorbike/ a common sight/ particularly/ young people. 3.Some people/ install/ air horn/ their motorbikes/ this/ really annoying/ other