Bài 1: Tính gtln và gtnn của: A= 7 -8X +X^2 B=4X -X^2 +1 C=2X-X^2-4 D= -9X^2+24X -18 E=X^2-4X+Y^2-8Y+6 F=2X^2 -4X + 3 Bài 2:CMR: a) X^2-4X +7>0 (VỚI MỌI X) b)X^2+Y^2+2X-4Y+6>0 (VỚI MỌI X) C)-X^2-4X-5<0 (VỚI MỌI X)

Cho hình thang cân ABCD đáy lớn AB bằng 20cm cạnh bên AD=8cm và tạo với đáy lớn AB góc 65độ. A,tính đường cao DH và đáy nhỏ CD. B,tính góc ABD và đường c

11. He has been one of the BBC’s ……………… ……………………… for many years. (politic / correspond) 26. He was really guided by …………………. ………………….. (religion / believe) 42. The guides are ……………………… to lead our group to the top of the mountain. (quality) 47. Our school has a lot of ……………………….. teachers. (quality) 53. The children were taken to the …………………. garden yesterday. (botany) 54. Banyan trees ……………………. the Vietnamese country. (symbol) 55. Goods are ………………………. as long as they are returned in good conditions. (exchange) 67. She had a ………………… action to save her family. (hero) 81. Some volunteer …………………… are cleaning up the beach. (conserve) 85. Until her illness she was the main ………………… in the family. (provide) 91. Neighbors ……………… to the police about the noise from that house last night. (complaint) 92. He is one of the most famous ……………………. all over the world. (environment) 93. White ao dai symbolizes the ………………… of the girl students. (pure) 94. Smoking does harm ………………………… to people’s health. (repair) 95. Speaking in public seems to come quite ………………. to her. (nature) 98. The lava in that volcano ……………………. as it cools. (solid) 99. Paper and most plastics are ………………… materials. (recycle) 100. What should you do at school to ………………… pollution? (minimum)

Giúp mình nhaaa, mình cảm ơn ạaa

Calli: Erik nka các pác Y/c: tone tím, 1pic kí 1 pic k

trả lời giùm e câu này với ạ toán 9 mong đc hồi âm sớm

Vẽ Goku Super saiyan 4 ngầu chibi

Give the correct form of the word given to complete the sentence. 1. Ha Noi, .................the Old Quarter, become a perfect city for walking with handicraft shops, street food, etc. (ESPECIAL) 2. Ha Long Bay, which means descending dragon, is the ......................heritage of the world with 1,6000 limestone islands. (NATURE) 3. Below Sa Pa are .................rice terraces in the endless valley. (PICTURE) 4. Besides the beach, the main.............................. in Da Nang is the Museum of Cham Sculpture with the world’s largest collection of Cham artefacts. (ATTRACT) 5. Hue becomes one of the most ........................destinations for travelers to Viet Nam with the number of three million tourists a year. (POPULARITY) 6. Hoi An used to be one of the ..................ports of Southeast Asia, which were used by the Japanese, Portuguese, Dutch, French and Chinese merchants.

Giúp mình với mình cần gấp ạ 1. She went ………………… a bad cold just before Christmas. a.forward to b.down with c.through with d.in for 2.If you’re going on a long walk, plan your route carefully before you …………………. a.go on b. set off c.carry out d.make up 3. I’ve ………………… weight. My clothes don’t fit any more. a.gotten to b.turned out c.taken up d.put on 4. I’m in a hurry. I want to be home ………………… to see the game on television. a. before time b.by time c.in time d.on time 5. Come and see us more often. You must ………………… any time you like. a.drop in b.call out c.turn up d.get by 6.Their diet consists largely ………………… vegetables. a.of b.on c.with d.in 7.Storms on the Sun can interfere ………………… radio broadcasts on the Earth. a.with b.on c.at d.in 8.Helen was going away. We went to the station to ………………… a.take her in b.pick her up c.see her off d.get her out 9.Let’s ask our teacher how to solve this problem ………………… we can’t agree on the answer. a.because of b.so c.consequently d.since 10.She came ………………… some old photos in a drawer. a.up b.down c.across d.into giúp mình nhé. Cảm ơn nhiều ạ

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