a) 3(x + 7 ) +9 = 9 - 2 ( x + 5 ) b) 218 - ( x + 31 = x - 29

tính bằng 2 cách :(-15+30).(-6) mik cần giải gấp

Các bạn giúp mình nhé mình đang cần gấp lắm bạn nào làm đúng nhất mình sẽ cho bạn 5 sao

1.trang ____ me 20 minutes ago. A. phones B. phoned C. had phoned D. has phoning * 2.Her mother ..................this city two years ago. A. left B. leaves C. is leaving D. will leave * : …………..is it from your house to school? – About two kilometers A. How far B. How long C. How high D. How * friend and I …………… you too long A.has been waited B. has waited C. have waited D. have been waiting * .He has been selling motorbikes ________. A. ten years ago B. since ten years C. for ten years ago D. for ten years * While we_______ in the park, Mary fell over. A. ran B. are running C. was running D. were running * It was ………………….. warm when we were in Vienna. A. very B. so C. such D.too * My sister ___________ how to swim. A.Don’t know B. doesn’t know C.don’t knows D. not know * She is ……………….. old to work. A. very B. too C. so D.such * I ______ (have) dinner when I suddenly heard a loud bang. A. was having B. were having C. had D. having * He is a ………………….. intelligent child. A. very B. so C. too D.much * . _________ flown in an aeroplane before? A. Have you ever B. Had you ever C. Are you D. Do you * It was …………………. hot that we didn’t go out. A. such B. so C. very D.tooA * The sun . . . . . . . . . . . . . . . in the east. A. rise B rose C. rises D rising * . I (be)___ a student in Moloxop School in 1998. A. was B. were C. to be D. to was * Jack _________ his homework yet, so he won’t go out with his friends A. finish B. has finished C. doesn’t finish D. hasn’t finished * I___ (not / understand) what they were talking about. A. did not understand B. not understand C. do not understand D. does not understand * Son Tung MTP is my favourite singer. He __________ very well. A. draws B. sings C. takes D. makes * The Smiths never___________to their neighbors A. Talk B. talks C. don’t talk D. doesn’t talk * When I phoned my friends, they (play) ________ cards. A. played B. were played C. were playing D. was played * Christopher Columbus _______ American more than 500 years ago. A. discovered B. has discovered C. had discovered D. had been discovering * My classmates ___________lazy. They always do their homework. A. Are B. is C. aren’t D. isn’t * I ______ to New York three times this year. A. have been B. was C. were D. had been * The tea was …………………. hot .A. so B. very C. such D.much * Now, my classmates __________ new books and clothes for children in flooded areas in some central provinces. A. donate B. donates C. are donating D. donated * _______your keys yesterday? A. Did you find B. Were you finding C. was you finding D. Were you find * I _________ a bath when the phone rang A. was having B. had C. am having D. have * .We _______ Dorothy since last Saturday. A. don’t see B. haven’t seen C. didn’t see D. hadn’t seen * I __________ French when I was a child. A. studies B. study C. studied D. were study * It’s ………………… terrible weather. A. such B. so C. much D.too * . Would you be ………………….. kind as to tell me the time?A. so B. very C. too D.such * . She is looking ………………….. older. A. so B. such C. very D.too * While Tom (play)___ the piano, his mother was doing the washing-up. A. was playing B. were playing C. played D. play * Because Lan _________ breakfast, she isn’t hungry now A. was eating B. eats C. ate D. has eaten * They _________ maried for 22 years A. have got B. have been C. was D. got * The milk was …………………. good that we couldn’t stop drinking it. A. very B. too C. so D.such * . He spoke ………………… fast that nobody could understand. A. so B. very C. too D.such * They_______ football on TV at 7 p.m. yesterday. A. were watching B,watched C.was watching D.watched * We have lived in this town _________ 1998 A. for B. since C. ago D. in * Right now I am attending class. Yesterday at this time I ______ class A-attended B-was attending C-was atteded D-were atteded *

Một mảnh đất hình chữ nhật có chiều dài 30m , chiều rộng 20m . Người ta đào 1 cái có bán kính 15m . Tính diện tích còn lại ? Mik thấy đề hơi sai , ai thấy vậy thì sửa đề và giải hộ mik ạ !

giúp e với ạ em cần gấp mai phải nộp r ạ

I will help you if you promise to try harder --> Unless

dựa vào câu a,hãy so sánh các phân số sau với 1 5 3 9 7 49 32 - ; _ ;_; _ ; __; __ 6 2 19 7 46 71

tìm các từ ghép đc cấu tạp theo mẫu :: Thợ + X : X + Viên: Nhà + X : X + Sĩ

làm hộ mk vs làm nhanh vote5*+ctlhm