VI. Complete the second sentence so it means the same as the first, using the words in brackets. Use two to five words. 43.Lions are stronger than tigers. aren’t Tigers ………………………………………………………………. lions. 44.I’m not as old as my sister. than My sister ………………………………………………………………. 45.Our cat is slightly smaller than Daniel’s. quite Our cat isn’t ………………………………………………………………. Daniel’s. 46.Look, Melanie’s dress is really similar to your mother’s. same Look, Melanie’s dress ………………………………………………………………. your mother’s. 47.Nokia phones are not the same as Motorola ones. from Nokia phones ………………………………………………………………. Motorola ones. 48.The Metropole is much more expensive than any other hotel in our town. far The Metropole is ………………………………………………………………. hotel in our town. 49.Prices aren’t quite as low as they used to be. bit Prices are ………………………………………………………………. they used to be. VIII. Fill in the blanks with the correct form of the infinitive or –ing form. For Thomas (56) ………………………………… (agree) to go on a walking holiday was very surprising. He usually hated (57) ………………………………… (do) outdoor activities of any kind. We thought we’d have difficulty in (58) ………………………………… (persuade) him but it was his idea (59) ………………………………… (set off) the very next day. We suggested (60) ………………………………… (go) to the Lake District as it would be the best place (61) ………………………………… (find) hotel rooms each night. Though we’d have preferred (62) ………………………………… (take) the coach, Thomas encouraged us (63) ………………………………… (travel) by train. We decided (64) ………………………………… (meet) at the station early the next morning as we wanted (65) ………………………………… (be) in Carlisle by midday. Imagine the look on our faces when Thomas arrived on a huge, brand-new motorbike. ‘Do you think I’ll be allowed (66) ………………………………… (take) it on the train?” he said. ‘It needs (67) ………………………………… (run in) and this holiday’s the ideal time (68) ………………………………… (do) it!”

3. What a pity the weather isn’t fine. I wish .................................................................................................................................... 4. I can’t pay you any money. I wish ................................................................................................................................... 5. What a pity he doesn’t invite us to the party. I wish ................................................................................................................................... 6. Tom isn’t here now. I wish .................................................................................................................................... 7. I can’t easily give the answer. I wish .................................................................................................................................... 8. She won’t visit me again. I wish .................................................................................................................................... 9. I don’t have time to study. I wish .................................................................................................................................... 10. He isn’t here. I wish .............................................................................

Câu 1. Chứng minh √7 là số vô tỉ. Câu 2. a) Chứng minh: (ac + bd)2 + (ad – bc)2 = (a2 + b2)(c2 + d2) b) Chứng minh bất dẳng thức Bunhiacôpxki: (ac + bd)2 ≤ (a2 + b2)(c2 + d2) Câu 3. Cho x + y = 2. Tìm giá trị nhỏ nhất của biểu thức: S = x2 + y2. Câu 4. a) Cho a ≥ 0, b ≥ 0. Chứng minh bất đẳng thức Cauchy: b) Cho a, b, c > 0. Chứng minh rằng: c) Cho a, b > 0 và 3a + 5b = 12. Tìm giá trị lớn nhất của tích P = ab. Câu 5. Cho a + b = 1. Tìm giá trị nhỏ nhất của biểu thức: M = a3 + b3. Câu 6. Cho a3 + b3 = 2. Tìm giá trị lớn nhất của biểu thức: N = a + b. Câu 7. Cho a, b, c là các số dương. Chứng minh: a3 + b3 + abc ≥ ab(a + b + c) Câu 8. Tìm liên hệ giữa các số a và b biết rằng: |a + b| > |a - b|

Make sentences using the word given. 1. My family/ spend/ the afternoon/ prepare/ my birthday party/ yesterday. 2. Last night/ my friend/ not/ come./ I/ waste/ hours/ wait/ them. 3. You/ be/ waste/ time/ explain/ it/ him. 4. Children/ often/ spend/ only/ small part/ free time/ housework. 5. My mother/ always/ want/ spend/ the whole life/ take care of/ my family.

Cho hình bình hành ABCD có O là giao điểm của hai đường chéo. Chứng minh rằng: → → → → AB + BC = AD + DC Cần gấp, giúp mình với mình vote 5* nha

tuổi Bố năm nay gấp 2,2 lần tuổi con. Hai mươi lăm năm về trước tuổi bố gấp 8,2 lần tuổi con. Hỏi khi bố gấp 3 lần tuổi con thì con bao nhiêu tuổi?

Giúp mình với ạ,thanh mấy bạn nhá😙

Exercise 7. a: Complete each sentence with words in brackets, usingas ... as. No. A Opt. B 1.Your room is ....................... mine. (not/ big) 2.My car is........................... yours. (not/ fast) 3.I’m ................................... my sister. (old) 4.Rome is........................... Athens. (not/old) 5.I’m ................................... he is. (not / tall) 6.She is ................................... her brother. (not/ fat) 7.The film is .................................. I expected. (interesting) 8.This exercise is ................................... the other one. (easy) 9.His DVD player was ................................... mine. (cheap) 10.She is not ................................. her brother. (not/ smart) A.My room is bigger than yours. B.He is much taller than me. C.It’s very simple. D.She is slimmer. E.We were both born in 1984. F.He is really intelligent. G.You can drive faster. H.We paid the same price. I.I really enjoyed it. J. It was built earlier. Exercise 7. b: Match the sentence in column A with a sentence in column B (The two sentences have the same meaning). 1. ................ 2. ................ 3. ................ 4. ................ 5. .................. 6. ................ 7. ................ 8. ................ 9. ................ 10. ................

Cho mình hỏi là tại sao f(-1) ≤0 và f(1) ≤0 vậy ạ? Mình không hiểu cho lắm, các bạn giúp mình với nhá!

mn giúp em vs ậ em đang cần gấp ạ