tính a, √50 - √ 18 + √200 - √ 162

Ai giải vs em dc ko ạ đang cần gấp

I. Choose A, B, C or D to indicate the correct answer to each of the following questions. 1. Many rare and precious species are now the verge of extinction. A. in B. on C. from D. by 2. The overall aim of the book is to help bridge the gap between theory and practice, particularly in language teaching. The phrase “bridge the gap” is closest in meaning to . A. minimize the limitations B. construct a bridge C. reduce the differences D. increase the understanding 3. I don’t like a few things about my job, but it is quite enjoyable. A. by and large B. by mistake C. sooner or later D. what is more 4. It is for us to do anything about the chaotic traffic. A. out of date B. without delay C. out of the question D. out of order 5. I just couldn’t remember her name even though it was on the of my tongue. A. edge B. tip C. top D. front 6. When you do something, you should_ . A. get through to it B. turn over a new leaf C. weigh up the pros and cons C. go down well with 7. I realized that he was a thief. A. sooner or later B. all along C. at the beginning D. eventually 8. Even if you are rich, you should save some money for a day. A. windy B. stormy C. rainy D. cloudy 9. I do wish you’d stop biting your nails, John. It really . A. lets me down B. tells me off C. gets me down D. gets on my nerves 10. My father when he found out that I’d damaged the car. A. hit the roof B. saw pink elephants C. made my blood boil D. brought the house down

Pls help me :((((((((((((((((((

để chuẩn bị cho đại hội lên đội cô tổng phụ trách yêu cầu ban chỉ huy làm 1 hòm phiếu hình lập phương cạnh 60cm rồi trang trí hòm phiếu bằng cách dán giấy màu kín 6 mặt ngoài dsao cho không có 2 mặt liền nhau cùng dán 1 giấy màu a) tính diện tích giấy màu cần dùng để dán hòm phiếu b) cần ít nhất mấy màu để trang trí hồm phiếu theo yêu cần của cô phụ trách

pls help me :(((((((((((((((((((

Pls help me :((((((((((((((((((((

Pls help me :((((((((((((((((((((((((

II. Complete each of the sentences with the words given below. peas son cucumber chalk sight cool cheese father touch cheese contact dogs hand red-handed cake tip 1. I just couldn’t remember her name even though it was on the of my tongue. 2. I’ve never enjoyed going to the opera; they’re not really my cup of . 3. They are twin brothers. They are like two in a pod. 4. Suzy: John is a gentle man and so is his son Lily: Like , like . 5. I thought he would be shocked, but in fact, he was as as a . 6. We are aware of our differences; we accept that we are and . 7. After Lan moved to America, I lost with her. 8. I caught of my teacher while coming back to school. 9. The man was caught stealing food in the supermarket. 10. Don't forget to take your umbrella - it's raining cats and out there. 11. Can you please give me a , I really need some help. 12. The exam is a piece of . It’s too easy.

giúp mik vs ạ hứa cho ctlhn (a² + b²).(c² + d²)