B=(x+y/2x-2y-x-y/2x+2y-2y^2/y^2-x^2):2y/x-y

Exercise 9. Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks. “Do not wait for leaders; do it alone, person to person.” Mother Teresa was the founder of the Order of the Missionaries of Charity, a Roman Catholic congregation of women dedicated to (1) ____ the poor. Considered one of the greatest humanitarians of the 20th century, she was officially recognised as Saint Teresa of Calcutta in 2016. Born in 1910, in Skopje, Macedonia, Mother Teresa taught in India (2) ____ 17 years before in 1946 she experienced her “call within a call" to (3) ____ herself to caring for the sick and poor. (4) ____ Teresa enjoyed teaching at the school, she was increasingly upset by the poverty surrounding her in Calcutta: the Bengal famine of 1943 and the outbreak of Hindu/Muslim violence in August 1946. Her order established a nursing home; centres for (5) ____ blind, aged, and disabled; and a leper colony. In 1979 she (6) ____ the Nobel Peace Prize for her humanitarian work. She died in September 1997 and was beatified in October 2003. 1. A. help B. helped C. helping D. helpful 2. for B. since C. after D. from 3. A. allow B. devote C. encourage D. spend 4. A. After B. Until C. Although D. Because 5. A. a B. the C. these D. those 6. A. received B. recognized C. awarded D. presented

viết tích sau dưới dạng luỹ thừa của 1 số nguyên: a/ (-8).(-27).(-125) b/ 64.(-2)^3 .(-7).(-49)

Giúp mình giải với mọi người ơi

Ai giúpmình giải bài 2 phần rut ra nhận xét phan b mình vote 5* cảm ơn nx

Câu 9. Có thể hòa tan được các dung dịch sau không? (Phải hòa tan những muối nào, bao nhiêu mol): a. D.dịch A chứa: 0,04 mol Fe3+; 0,02 mol NO3– ; 0,01 mol Cu2+.

a: (4x-10)(24+5x)=0 b: (x-1)(5x+3)=(3x-8)(x-1)

Exercise 8. Read the following passage and mark the letter A. B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks. A YEAR WITH OVERSEAS VOLUNTEERS I was with Overseas Volunteers (OV) for a year after leaving university, and I was sent to an isolated village in Chad, about 500 kilometres from the capital N'Djamena. Coming from a (1) ____ country, I got quite a shock, as conditions were much harder than I had expected. But after a lew days I got used to (2) ____ there. The people were always very friendly and helpful, and I soon began to appreciate how beautiful the countiyside was. One of my jobs was to supply the village (3) ____ water. The well was a long walk away, and the women used to spend a long time every day (4) ____ heavy pots backwards and forwards. So I contacted the organisation and arranged to have some pipes delivered. (5) ____ these pipes were not really perfect, they still made a great difference to the villagers. All in all, I think my time with OV was a good experience. Although it was not paid, it was well worth doing and I would recommend it to anyone (6) ____ was considering working for a charity. 1. A. rich B. comfortable C. well-paid D. luxurious 2. A. lived B. living C. lived D. lively 3. A. for B. on C. with D. from 4. A. carrying B. wearing C. holding D. drinking 5. A. If B. Because C. When D. Although 6. A. which B. when C. where D. who

Giúp mik làm bài V với V : là điền dạng so sánh của tính từ trong ngoặc.

Exercise 7. Use so, and, but, yet, or, nor, for to connect sentences 1. My family really loves Japanese food, ____ we order it twice a week. 2. These games are challenging, ____ it’s not easy to spend little time playing them. 3. Smoking is extremely detrimental to health, ____ many people continue to smoke anyway. 4. We were lost in the forest, ____ luckily my friend had a map in his backpack. 5. Would you like a cup of milk tea ____ a cup of hot chocolate after dinner? 6. Minh had his teeth decayed, ____ he refused to see the dentist. 7. Anna thinks she ought to go to the university, ____ she wants to get qualifications for her dream job. 8. He invested a lot of money in this business, ____ it went bankrupt in a very short time. 9. The students didn’t revise for their exams, ____ did they realise how important the exams were. 10. Peter wonders he should stay home and watch TV, ____ he should go out and have dinner with his friends.