1 tinh a) -1/16 + -1/24 b) -18/10+0,4 c) -1/8 - 3/20 b) 1/2 - (1/3+1/10) b) 1/2 - -1/3 + 1/23 + 1/6 d) 2/5 + (-4/3) + (-1/2) 2 tim x a) x + 2/3 =4/5 b) x - 2/7 = 7/21 c) 1/20 - (x - 8/5 ) = 1/10 d) 16/5 -x = 4/5 - 3/10 33 tinh nhanh M = 1/2 . 3 + 1/3 . 4 + 1/4 . 5 + ...................+ 1/19 . 20

Tìm số tự nhiên N nhỏ nhất sao cho n chia cho 3,5,6 có số dư là 1;3;4

( $x^{2}$ + cx+ 2)(ã+b)= $x^{3}$ + $x^{2}$ -2 Gấp

1.I haven’t played football since for 2 years. =>The last time …………………………....................................….....................……. => I last ......................................................................................................................... =>It is ............................................................................................................................ 2.We haven’t seen Tom for 5 weeks. =>We last …………………………………………...................................................... =>It is ........................................................................................................................... => The last time............................................................................................................ 3.It hasn’t rained for a fortnight. =>The last time ………………………………..................................................…….. =>It last …………………………………………….................................................... =>It is ......................................................................................................................... 4.Lucy hasn’t worn that dress for a month. =>The last time …………………………………….............................................…… =>It is ........................................................................................................................... => Lucy last ................................................................................................................... 5.My father hasn’t been to Vung Tau for 2 years. =>The last time …………………………………………............................................. => My father last =>It is ........................................................................................................................... 6. I haven’t seen Henry for two years. =>It is ………………………………………………...............................................… 7. Tim has not had his hair cut for over 3 months. =>It is ………………………………………………...............................................… 8. I haven’t enjoyed myself so much for years. =>It is ………………………………………………..............................................…. 9. I haven’t eaten this kind of food for 5 years =>I last ………………………………………………..............................................…. 10. It is five years since I last met David. =>I haven’t ………………………………………..........................................………

although as long as because even if so that unless until while 1. She turned down that job offer it involved working shift, which prevented her from taking care of her family. 2. You can use my car you bring it back before 5.00 as I will need it by then. 3. We will have a good harvest this year it rains and prevents us from harvesting our crop. 4. We are going to import a new assembly line we can improve our product quality. 5. he has become a millionaire, Tom still drives his old car to work and leads a modest life. 6. You have to finish your report it takes you all night. 7. The little girl didn't eat anything her mother came back from work. 8. It's difficult to find the parking lot. So you can stay in the car I go into the store. I'll be back in just a few minutes. 9. University education is always necessary it's possible to get a good job without a degree. 10. he's eating a lot, he can't gain weight and still looks very thin.

giúp tớ với, ko viết ra giấy nha

Hòa tan hết 7,74g hỗn hợp bột 2 kim loại Mg và Al bằng 500ml dung dịch hỗn hợp chứa axit HCl 1M và axit H2SO4 loãng 0,28M, thu được dung dịch A và 8,736 lit khí H2 (đktc). Cho rằng các axit phản ứng đồng thời với 2 kim loại. a/ Tính tổng khối lượng muối tạo thành sau phản ứng. b/ Cho dung dịch A phản ứng với V lít dung dịch hỗn hợp gồm NaOH 1M và Ba(OH)2 0,5M. Tính thể tích V cần dùng để sau phản ứng thu được lượng kết tủa lớn nhất, tính khối lượng kết tủa đó. giải bằng cách lập pthh phân tử ạ (ko dùng phương trình ion nha)

: Bác Tư có 38 con thỏ, chia đều cho các chuồng, mỗi chuồng không quá 5 con. Vậy bác Tư cần ít nhất bao nhiêu cái chuồng để chứa hết số thỏ trên?

Mik đg cần gấp 15 phút nữa nộp rồi

1. I haven’t played football since 1970. =>The last time …………………………...........................................................………. => I last.............................................................................................................................. 2. We haven’t seen Tom since he moved to Bristol. =>We last ………………………………….......................................................……….. => The last time ............................................................................................................... 3. It hasn’t rained for a fortnight. =>The last time ……………………………......................................................……….. =>It last ………………………………….....................................................………….. 4. Lucy hasn’t worn that dress since Barbara’s wedding. =>The last time ………………………………................................................………… => Lucy last....................................................................................................................... 5. My father hasn’t been to Vung Tau for 2 years. =>The last time ………………………………………...............................................…. => My father last .............................................................................................................