Tam giác ABC vuông ở A. M(0;0) là trung điểm BC, K(6;2) thuộc AC. Pt phân giác (BD): x+2y-5=0. M' đối xứng với M qua BD, M'(2;4). Tìm tọa độ A,B,C biết yB<3

Cho góc ∠AOB=120 độ. Bên trong góc AOB vẽ các tia OM và ON sao cho Om ⊥ OA, ON ⊥ OB. Tính số đo các góc ∠AOM, ∠BON. CMR: ∠NOA = ∠MOB

Giúp em một số bài tập dưới đây được ko a. Em đang cần tìm một lời giải chi tiết ạ tại em bị mất gốc? mọi người có thể giải thích cho em tại sao ta chọn đáp án này mà ko chọ đáp ko ạ! help me! 1. had you told me that this was going to happen. I .....it. A. would never have believed B. don't believe C. hadn't believed D. can't believe 2. Pull all the toys away..... someone slips and fails on them A. provided that B. unless C. in case D. so long as 3. many argue that the world will never make the switch to cleaner forms of energy .....easily obtainable soil sources remain. A. suppose that B. providing that C. unless D. as long as 4. ......... you to be offered that job, would you have to move to another city?> A. should B. were C. had D. provided that 5. You will find their house ....... you take a good steet map with you. A. as long as B. even if C. if only D. otherwise 6. You'd better stop spending money, .... you will end up in debt. A. unless B. otherwise C. if D. in case 7. henry ......... arich man today if he had been more careful in the past. A. will have been B. will be C. would have been D. would be 8. ........ you visit him, give him my best wishes. A. Could B. Would C. Should D. might 9. Were she ten years younger, she ....... the beauty contest. A. will enter B. had entered C. would enter D. would have entered 10. If it..... their encouragment . he could have given it up. A. had been for B. hadn't been C. hadn't been for D. wouldn't have been for 11. ........ any employee be ill, they must call the office to inform their head of depature A. Were B. should C. had D. if 12. If Lucy's car...... down, she would be here right now. A. didn't break B. hadn't broken C. wouldn't have been D. doesn't break 14. If i ..... my wallet at home this morning, I ...... money for lunch now. A. leave/will have B. didn't leave/ would have C. hadn't left/ would have D. hadn't left/ would have had 15. i ...... you sooner had someone told me you were in the hospital. A. would have visited B. visited C. had visited D. visit 16......... then what i know today, i would have saved myself a lot of time and trouble over the years. A. had I known B. did I know C. if i know D. if I wold know 17. if someone...... into the store, smile and say," May I help you?" A. comes B. came C. would come D. could come

Ở một loài thực vật , phép lai AaBbdd× aaBbDd thu được F1 .Biết rằng mỗi gen quy định 1 tính trạng , gen trội là trội hoàn toàn , các gen nằm trên các NST thường khác nhau a, Xác định tỉ lệ KG ,KH ở F1 b, Tính tỉ lệ cá thể F1 có kiểu hình lặn ít nhất về 2 tính trạng trong số 3 tính trạng trên

Có sách hóa nâng cao lớp 10 môn toán, hóa nào hay ko ạ

chứng minh rằng (ab+ba)chia hết cho 11

Cảm nhận bài thơ Câu cá mùa thu của Nguyễn Khuyến (có sáng tạo)

Viết đoạn văn ngắn (nửa trang giấy thi) cảm nghĩ của em về nhân vật cô bé bán diêm Lưu ý không copy trên mạng

Tìm n thuộc N sao cho: a;(n+3) chia hết cho (n-2) b;(2n+9) chia hết cho (n-3) c;(3n-1) chia hết cho (3-2n)

#Mis It's country music that she says she likes, but I know that really turns her on is some hard rock. A It’s B says C know that D likes