Số cặp giá trị (x;y) nguyên thỏa mãn (2x+1)(3y−2)=−55 là A.6cặp B.8cặp C.2cặp D.4 cặp

cho đường thẳng xy, O thuộc xy. Trên nửa mặt phẳng bờ xy vẽ tia Ot, Oz sao cho goc xOt=60 độ, góc yOz=45 độ. a) Kể tên các cặp góc kề nhau, kề bù có trên hình vẽ b) tính góc xOz, zOt, tOy.

Vẽ anime+chibi nữ Hôm nay ko có yêu cầu. :) Nhưng cần vẽ đẹp và chụp rõ. Ngoài lề: Mn dành dụm được bao nhiêu hộp quà điểm danh rồi? 🥴

Giá trị của biểu thức D=2^100−2^99−2^98−...−2^2−2−1 bằng A.2^100−1 B.2^100+1 C.-1 D.1 Lưu ý :−2^2 là trừ ik 2^2 nha CHỈ GHI ĐÁP ÁN THÔI NHA

1. The Government is trying to ________when it says it will spend more on the health service without raising taxes. A. chew the fat B. wave the flag C. square the circle D. put the lid 2. The government is using the taxes from the working class to bail out the banks that ruined the economy? That really ________! A. sows wild oats B. spills the beans C. takes the biscuit D. upsets the apple cart 3. I've searched ________ for that old photo album, but I can't find it anywhere. A. high and low B. long and short C. straight and narrow D. thick and thin 4. I don't think Paul will ever get married — he's the stereotypical _______ bachelor. A. settled B. confirmed C. fixed D. determined 5. I'm afraid we got our _______ crossed — I thought my husband would be picking up the children and he thought I was doing it. A. minds B. purposes C. wires D. fingers 6. It’s a pleasure to be in her company as she is always so _______ and welcoming. A. adamant B. jubilant C. obnoxious D. amiable 7. They will provide a lot of amusement hopping _______ over the rocks from one puddle to another. A. up and down B. in and out C. back and forth D. back to front 8. Celebrities feel special when they are surrounded by a(n) _______ of loyal followers. A.brigade B. entourage C. fraternity D. squad 9. An angry _______ stood outside parliament, shouting and threatening violence. A. cast B. crew C. flock D. mob 10. “I have a reservation for _______ of six. The name’s John.” “I’ll show you to your table”. A. band B. circle C. party D. platoon

Bài 5 (1 điểm): a, Tìm giá trị nhỏ nhất của biểu thức A= 2018./ x-1/ + 2019./ x-3/ giúp em vs các cao nhân

2n+7chia hết n+1 3n+7chia hết 2n+1

Cho tam giác ABC vuông tại A. Trên tia BC lấy điểm D sao cho BD=BA.Đường vuông góc với cạnh BC tại D cắt AC tại E,cắt BA tại F. a)Chứng minh tam giác ABE=tam giác DBE b)Chứng minh tam giác CEF cân c)Chứng minh AD//CF Làm giúp mình với!

GT danh lam thắng cảnh tượng đài Trần Hưng Đạo, hồ Vị Xuyên

1. Margie was an _______ traveller; even dangerous conflict would not stop her from visiting a place. A. intrepid B. inquisitive C. ingenious D. insightful 2. The floral bouquets we entered into the competition were a _______ of colour, but unfortunately, we did not win first prize. A. wham B. riot C. drop D. buzz 3. Don’t forget to _______ your sources; you don’t want to get accused of stealing information. A. quote B. cite D. name D. refer 4. Travelling to Norway and experiencing the Nothern Lights first hand was always at the very top of Mary’s _______ list. A. luggage B. lag C. basket D. bucket 5. The football fans were coming in _______ to watch the final game. An hour before the kickoff the stadium was packed full. A. fingers and thumbs B. bits and bobs C. dribs and drabs D. bibs and tuckers