giúp mik với ạ ngắn thui ^_^ hì hì a) 125.(-61).(-2) ³. (-1) ^2n (n ∈ N*) b) 136.(-47)+36.47 c) (-48).72+36.(-304) d) (x+1)+(x+3)+(x+5)+...+(x+98)=0 e) (x-3)+(x-2)+(x-1)+...+10+11=11 f ) x+(x+1)+(x+2)+...+2018+2019=2019

ai giúp mk đề này vs giúp cả 2 phần nha , ai ko giúp bài 2 tự luận cx đc , mak giúp thì 5 sao,mk sẽ bù điểm nha

giúp mình bài 11 vs mình đăng 3 lần mà ko ai tl

II. Complete the sentences, using: although, despite, in spite of, however, or nevertheless. Sometimes, two answers are possible. 1. I think I did OK in my speech last night ______________ I’d had almost no sleep for 24 hours. 2. ______________ I heard the telephone ring, I didn’t answer it. 3. We enjoyed our holiday_________________ the rain. 4. _______________ he got top marks at high school, he never went to university. 5. ________ there was no electricity, I was able to read because I had a candle. 6. She failed the test _______________ she studied hard. 7. _______________ difficulties, the firemen managed to save many people who were caught in the fire. 8. Everyone thought she would accept the offer. __________________, she turned it down. 9. Carol arrived at the meeting ______________ I asked her not to be there. 10. It looks like they’re going to succeed ______________ their present difficulties. 11. ______________ it was raining heavily, he went out without a raincoat. 12. My father is very busy. ______________ , he is always willing to give a hand with the housework. 13. The sky was grey and cloudy. ______________, we went to the beach. 14. Some English words have the same pronunciation ______________ they are spell differently, for example, dear and deer. 15. I was cold and wet _____________ .Bob put on his swimming suit and went to the beach.

lập công thức hóa học của hợp chất biết: 1,Na(I) và (CO3) (II) ; 2,A1(III) và (SO4) (II) ; 3,BA (II) và (C1) (I) [mik đg cần gấp ak]

help me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Sau khi pháp rút khỏi nước ta mĩ có hành động gì

bài1 rút gọn biểu thức a, x+(-30)-[95+(-40)+(-30)] b, a+(273-120)-(270-120) c, b-(294+130)+(94+130) bài2 đơn giản biểu thức sau khi bỏ ngoặc a, -a-(b-a-c) b, -(a-c)-(a-b+c) c, b-(b+a-c) d, -(a-b+c)-(a+b+c)

1) The longest fish in the contest was eighteen inches long"."It__by. a) was catching b) caught c) was caught d) catch 2) I heard you decided to take up tennis"."Yes, I___tennis every day". a) been played b) play c) playing d) played 3) We're still looking for Thomas"."Hasn't he___yet?". a) been found b) to find c) found d) being found 4) Diana is a wonderful ballet dancer"."She___since she was four". a) has dancing b) has danced c) is dancing d) was danced 5) What a beautiful dress you're wearing!""Thanh you. It___especially for me by a French tailor". a) is made b) has made c) made d) was made 6) Those colorful eggs___in Russia. a) were painted b) were paint c) were painting d) painted GIUP MINH VOI A , LAM CHINH XAC NHA , MINH CAM ON NHIEU.