Quy đồng mẫu các phân số: 9/-10;-15/-45 và 5/-17

VI.Rearrange the groups of words in a correct order to make complete sentences 1is cheaper and /so it is becoming / natural energy / important. / better for the enviroment / more and more ->Natural energy.... 2. but also the enviroment / If we recycle / money and energy, / all waste things, not only / will be cleaner. /will we save ->If we recycle.... 3.an efficient way / What / to be / to dispose of waste / ? / is considered ->What... 4.and soil around plants / It’s better / the leaves and flowers. / to water the roots / rather than spraying ->t’s better..... 5.clothes and money. / The government / victims with food, / provided the flood ->The government....

Tìm hai số nguyên a, bt: a>0 và a.b(b-2)=3

tìm x nguyên thỏa mãn |x+1|+|x-2|+|x+7|= 5x - 10 giải chi tiêts nha

giúp mình với $\sqrt{x-2}$ - $\sqrt{x+1}$ = $\sqrt{2x-1}$ - $\sqrt{x+3}$

giúp em câu này với ạ 4. Cho 1,1g hỗn hợp bột sắt và bột nhôm tác dụng vừa đủ với 1,28g bột lưu huỳnh. a. Viết PTHH của phản ứng xảy ra. b. Tính tỉ lệ % của sắt và nhôm trong hỗn hợp ban đầu theo lượng chất và khối lượng chất.

Cái mà theo pthh : no2pu ý Cho e hỏi pu là j

Mọi người ơi giúp mình bài này với ! Mình cảm ơn nhiều ạ^^

Hãy miêu tả hình ảnh người mẹ của em trong một hoạt động mà mẹ yêu thích. ( soạn báo cáo )

1 / 2 I – Read the answers and complete the questions in the following conversation. 1. Where .......................................................................? I live at 215 Le Loi Street. 2. What time ..................................................................? I get up at six o’clock every morning. 3. What .................................................................. then? Then, I brush my teeth and do morning exercise until haft past six. 4. When ........................................................................? I usually leave for school at quarter to seven. 5. How .........................................................................? I walk to school. 6. Where ..................................... ? At home or at school? I usually have breakfast at home, but sometimes at the school canteen. 7. How long ...................................................................? School last from haft past seven to eleven o’clock. 8. How many lessons.............................. in the morning? I usually have three lessons in the morning. 9. How often .................................................................? I have English lesson three times a week. 10. Which subject ..................................................best ? I must say it’s Math. I like it best of all the subjects. II - Supply the correct form of the verbs in brackets to complete the sentences. 1. We (be) in Grade 8 this year. ...................................................................................... 2. Hoa and Lan (busy) some books yesterday. ...................................................................................... 3. Our friends (watch) a game on T.V at the moment. ...................................................................................... 4. Ba’s teacher (give) him a lot of homework last week. ...................................................................................... 5. Our class (go) to the zoo next week. ...................................................................................... 6. Their grandmother (tell) them a lot of stories last year. ...................................................................................... 7. Look! Lan (wear) a new dress. ...................................................................................... 8. We (visit) our grandparents this weekend. ...................................................................................... 9. All the students in our school (receive) new books yesterday. ...................................................................................... 10. Listen! The birds (sing) beautifully.