user-avatar
duongnguyenquynhanhlop96
2 năm trước
a, $\frac{x}{3}$=$\frac{y}{4}$ và x+y=14 b, 4x=5y và 3x-2y=35 c, x:5 = y:6=z:7 và x-y+z=36 d, $\frac{x}{2}$=$\frac{y}{3}$ ; $\frac{y}{4}$=$\frac{z}{5}$ và x-y-z=28 e, $\frac{x}{3}$ = $\frac{y}{5}$ = $\frac{z}{7}$ và 2x + 3y - z =-14 f, 3x = y ; 5y = 4z và 6x + 7y + 8z = 456 g, $\frac{x+1}{2}$ = $\frac{y + 2}{3}$ = $\frac{z 3}{4}$ và x + y+z = 31 h, x : y : z : t = 2 : 5 : 8 : 15 và x+ y +z +t = 90
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions . A: generous B: princess C: cinema D: comedy 15 Choose the underlined part A, B, C or D that needs correcting. Picture 2 A: A B: B C: C D: D 16 Choose the best answer A, B, C or D to complete the sentence. Question8. Don’t worry. It is _______ to travel to that village even at night. A: difficult B: inconvenient C: unsafe D: safe 17 Choose the sentence which has a similar meaning to the first one. Question 24. While I sympathize with your problem, there is nothing I can do to help. A: I can’t do anything for you, though I understand what you are going through. B: Perhaps I can help you if you tell me more about your problem. C: I would like to help you sort out this problem, but I won’t. D: Since I have no idea about your problem, I cannot be of any assistance. 18 Choose the best answer A, B, C or D to complete the sentence. Question9. Yoga helps us learn _______ to co-ordinate breathing and movement. A: what B: when C: why D: how 19 Choose the best answer A, B, C or D to complete the sentence. Question12. An old woman was ________ the goats up the mountainside. A: running B: riding C: talking D: herding 20 Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. A: although B: paragraph C: enough D: laugh 21 Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits blank (19). My village is about 50 kilometers from the city center. It is a very (17)________ place where people plant flowers and vegetables only. It is very famous for its pretty roses and picturesque scenes. The air is quite fresh, however, the smell of the roses make people (18)________ cool. In spring, my village looks (19)________a carpet with plenty of colors. Tourists come to visit it so often. Nowadays, with electricity, it doesn’t take the villagers much time to water the roses. A: same B: alike C: as D: like 22 Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question14. In the kitchen Mom: “Pour the cooking oil into the pan, wait to heat it before frying something” Daughter: “____________” A: You’re welcome B: I see C: It’s not true D: It’s good 23 Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. A: unique B: harmful C: slowly D: cloudy

Choose the best answer A, B, C or D to complete the sentence. Question 7. The Viet people have many _______ customs and crafts. A: customary B: traditional C: tradition D: culture 5 Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question16. Thanks to the guide, we’ve learnt a lot of interesting information about the ethnic groups in Viet nam. A: boring B: challenging C: fascinating D: exciting 6 Choose the best answer A, B, C or D to complete the sentence. Question10. In the Central Highlands, the biggest and tallest house in the village is the _______ house. A: community B: commune C: communication D: communal 7 Choose the sentence which has a similar meaning to the first one. Question 23. Despite the firefighters’efforts, the building burned down completely. A: The firefighters did not work hard enough, and so the building was entirely burned down. B: The building would not have burned completely if the firefighters had tried harder. C: As a result of what the firefighters had done, the building was destroyed in the fire. D: The fire entirely destroyed the building even though the firefighters tried to stop it. 8 Choose the underlined part A, B, C or D that needs correcting. Picture 3 A: A B: B C: C D: D 9 Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. A: worship B: enjoy C: belong D: behave 10 Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) to each of the following questions. Question15. The Thai worship their ancestors. Every year they hold festivals and ceremonies with alternating songs between boys and girls, and many traditional games. A: grandfathers B: forefathers C: grandparents D: fathers 11 Choose the sentence which has a similar meaning to the first one. Question 22. I only remembered we had a meeting when you called me. A: You always phone me to remind me of when our meeting is. B: As soon as I realized that we had a meeting, you called me. C: I didn’t remember about our meeting until you called. D: I was happy because you remembered to call me for the meeting. 12 Choose the sentence which has a similar meaning to the first one. Question 25. There is little hope that Craig will be able to find a job. A: Craig hopes that he won’t have to find work for himself. B: Craig has given up hope of finding employment. C: It is not very likely that Craig’s search for employment will be successful. D: Craig hopes that it will only take a little time for him to get work.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team