Cho tứ giác ABCD có 2 đg chéo AC, BD cắt nhau tại Ở. Biết diện tích của tam giác AOD và tam giác BOC lần lượt là 4cm^2; 16cm^2. Tìm diện tích nhỏ nhất của tứ giác ABCD Các bạn giúp mình bài này với hoặc gợi ý thoii cũng dc. Cảm ơn nha

1. A bus collided with her car thirty minutes ago but the police ………...…. yet. A. has not come B. have not come C. did not come D. had not come 2. Michael ………… an accident while he …………. to school this morning. A. saw - was walking B. saw - walked C. was seeing - was walking D. was seeing - walked 3. Mr. Brown …………. in New York for 20 years, then he moved to Chicago in 2006. A. had lived B. has been living C. lived D. has lived 4. Right now, my father the ……… newspaper and my mother ………… dinner A. reads - has cooked B. is reading - is cooking C. has read - was cooking D. read - will be cooking 5. Taylor must be exhausted. She ……….. all the afternoon. A. is gardening B. have gardened C. has been gardening D. had been gardening 6. In a week's time he ……………… here for exactly ten years. A. have worked B. will have worked C. had worked D. will have been worked 7. Does Peter own that car?"- "No, I think his brother ……………… it now.” A. has owned B. is owing C. owns D. can own 8. When he arrived at the restaurant, the others ………………. A. were leaving B. had left C. have left D. are leaving 9. When I came to her house yesterday, she ………………. A. slept B. is sleeping C. was still sleeping D. sleeps 10. The old lady ………. very active since she ………... into the nursing home. A. has been – moved B. was – moves C. was - has moved D. is - moves

Tại sao em lại thích bài thơ câu cá mùa thu

Giải giúp em với Có 4 câu thôi ạ

Câu 40: Một dung dịch gồm 0.1 mol Na, 0.2 mol Baz 0.1 mol CI, a mol ion X. Ion X và giá trị a thỏa män lä A. 0.4 mol HSO4 B. 0.2 mol SO4² C. 0.4 mol OH D. 0.2 mol CO² Hộ em với ạ em cảm ơn nhiều

Một trong những nguyên nhân khiến liên xô có thể thực hiện chính sách ngoại giao nước lớn sau chiến tranh thế giới thứ 2 là

giúp mình nhaa, mai mình phải nộp rùi ý >< I. Find the word which has a different sound in the underlined part. 1. A. needed B. decided C. wanted D. laughed 2. A. cleaner B. threat C. ahead D. instead 3. A. breathe B. ethane C. thank D. healthy 4. A. choose B. moon C. food D. look 5. A. burden B. survive C. curtain D. furnish 6. A. camel B. sandy C. travel D. stable 7. A. dune B. hummock C. scrublands D. gun 8. A. basic B. desert C. president D. season 9. A. separate B. network C. dessert D. crest 10. A. stretches B. slopes C. ranges D. faces -------- II. Choose a word in each line that has different stress pattern. 1. A. education B. facility C. development D. intelligence 2. A. metropolitan B. organization C. university D. multicultural 3. A. fascinate B. restaurant C. expensive D. difference 4. A. feature B. ancient C. drawback D. conduct 5. A. fabulous B. pagoda C. determine D. convenient

Tìm GTLN , GTNN ................

Ai giúp e bài này vs ạ hứa vote 5 sao ạ

Mn chọn 1 trong 2 chủ đề vẽ : -Vẽ anime bay màu - Calli chữ: Không muốn chép phạt đâu! Nhanh nhé, chán lém