52 + 83, 93 + 24, 97+99 làm hộ mik nhé

trong các nước ĐNA , nước nào có nền kinh tế phát triển nhất ko

Số thứ 18 trong dãy số 3; 10; 17; 24; …. Là số nào? Có 10 người trong 3 ngày sửa được 1200m đường. Hỏi nếu có 15 người phải sửa đoạn đường dài 3000m thì hết bao nhiêu ngày? * 18 km/ giờ = …. m/ giây. Số thích hợp điền vào chỗ chấm là

Mng giải giúp em với ạ em camonnn

Thêm 1 câu hỏi Tìm số nguyên x, y (2x-5)(y-6)=17

Giúp mình với chỗ kia là căn x+3 nhá

II. Choose the correct answer. 16. A jet pack doesn’t a lot of space. A. have B. bring C. take D. occur 17. Which of transport do you think will be used in the future? A. mean B. meaning C. meanings D. means 18. We are looking for types of vehicles that help us to avoid . A. traffic B. traffic jam C. rush hours D. walking 19. The Segway, which is a vehicle, will be a success. A. two-wheels B. two wheels C. Two wheel D. two-wheeled 20. Which the Segway, the driver pulls the handle to go back or pushes it to go . A. forward B. backward C. round D. fly 21. I think we have electric taxis very soon. A. may B. might C. will D. would 22. With teleportation, you disappear at a place, and then in another place seconds later. A. appears B. appeared C. reappear D. reappears 23. Every day over 1,000 new cars add to the city and the city of over 20 million people is getting more and more . A. expensive B. famous C. difficult D. gridlocked 24. My brother and I often come to school foot. A. at B. in C. by D. on 25. Skycycling tubes will be easy . A. drive B. to drive C. ride D. to ride 26. The white cat is Helen’s, and the black cat is . A. my B. I C. mine D. of mine 27. We try to make the future green by using vehicles or kinds of energy that are . A. environmentally friendly B. environment friendly C. environmentally friendship D. environmental friendly 28. This is Linda’s hat, and those shoes are . A. her B. hers C. our D. their 29. It will be to ride a jet pack in bad weather because it doesn’t have a roof. A. enjoyable B. pleasant C. unpleasant D. comfortable 30. A sky safety system can help cars to traffic jams and crashes. A. prevent B. have C. use D. take 31. People won’t use flying cars the year 2050. A. before B. after C. during D. until 32. The city is facing serious problems. A. pollution B. polluted C. pollute D. pollutant 33. We believe that urban transport pods can travel around 30kph. A. with B. at C. in D. on 34. Do you think the price will increase next month? A. fossil fuels B. gases C. fuel D. natural gases 35. We will use more energy in the future. A. solar B. sunny C. sun D. sunlight

`0.69=0.69_{0}e^{-0.000121(t)}` ......................

⦁ Trong mặt phẳng tọa độ Oxy, cho đường thẳng (d) : y = ax +a + 1 và đường thẳng (d1) : y = (a2 – 3a + 3)x + 3 – a.

REVISION - UNIT 11 (25/5/2021) I. Find the word which has a different sound in the underlined part. 1. A. dear B. heart C. hear D. fear 2. A. stupid B. studio C. study D. student 3. A. brother B. thick C. they D. that 4. A. cheer B. parachute C. champagne D. machine 5. A. doctor B. hospital C. pollution D. tomorrow 6. A. flood B. typhoon C. groom D. balloon 7. A. hobby B. hour C. humor D. hole 8. A. dynamite B. terrify C. deny D. symbol 9. A. thunder B. earthquake C. gather D. healthy 10. A dump B. nuclear C. bulb D. plumber 11. A. traffic B. same C. crash D. jam 12. A. let B. jet C. vehicle D. success 13. A. foot B. scooter C. shoot D. food 14. A. sky B. fly C. by D. hymn 15. A. vehicle B. rehearse C.helicopter D. perhaps