Cân bằng giúp mìh cái nha!

1. aCxHyOz + bOz -> cCO2 + dH2O

2. aCxHy + bO2 -> cCO2 + dH2O

Nhờ các bn giúp mìh cái nha!

Cho tam giác ABC cân tại A. Vẽ 2 đường trung tuyến AM và BN. Cho biết AM=9, BC =8. Tính đoạn thẳng BN.

Mọi người giúp mìh cái nha có tick liền!!!(>_<) Đừng làm bừa, câu nào ko biết cứ để đó.

1.This road needs.............because it is too narrow. (wide)

2.Their team has had a..........................start to the competition. (disappoint)

3.The government is responsible for the........................of heath care. (provide)

4.Lan is considered the.....................English speaker in her class. (good)

5.I was so.......................with my study result that I didn't want to have a vacation. (satisfy)

6.Painters are .....................people. (create)

7.It's not a pretty town, but the..........................are beautiful. (surround)

8.Military service is..........................in every country. (compulsion)

9.She is very...........................; She is sympathetic with the handicap. (sense)

10.During my...........................I lived in Vinh City. (child)

11.She was arrested because she was driving...............................(care)

12.He doesn't agree with the.....................that there is life on other planets. (believe)

13.She is........................with her new job. (occupy)

14. My sister feels quite........................with her present job. (satisfaction)

15.Graduates are find it more and more difficult to find...................... (employ)

16. I can't think of any possible..............................for his absence. (explain)

17. You will need..........................and strength to complete this physical exercise. (determine)

18. The news is always so..........................for us these days. (depress)

19.Building a new factory there would be..........................disastrous. (environment)

20. The dictionaries are with the other.............................books. (refer)

21.................................about the success discourages him to take part in the race. (certain)

22. I worked for him and was paid................................ (year)

23. How much do you............................? (weight)

24. She felt a sense of.........................when her mother passed away. (lose)

25.Do you have a........................costume in your country? (nation)

1. Our house needs (repair)..............................as quickly as possible.

2. If Long (revise).........................the lessons carefully, he (not/fail)........................his last examination.

3. I would rather (watch)...........................TV than go to bed.

4. Do you wish you (buy)........................that laptop because its price is rising?

5. Don't worry! I'll have this application (type)............................immediately.

6. Not (to know)......................the languuage and (to have)..........................no friends in Germany, he managed (have)........................a stable job.

1. Hello, I (try)........................to phone you all the week. Where you (be)..................

2. By the time we (stop)....................., we had played football football for 6 hours.

3. The students (write)........................busily when Mr.Hung went to get a book he (leave).....................in the office.

4. When I finish my homework, (teach).......................my younger sister English.

5. While I (walk)..............................along the street, I (see)......................a terrible car accident.

6. (Buy)......................a very nice bunch of flowers, he went straight to her house.

7. Our classmates couldn't help (laugh)..........................when they heard the teacher's funny story.