Giúp mình vs Giải chi tiwets dùm mình nhen

Các bác giỏi toán giúp em câu c với ah OwO

V. 1​. My sister works in an office. She’s a ____. ​A. builder B.musician C. receptionist 2​. I work for a newspaper. I’m a ___. ​A. journalist B.politician C. lawyer 3. ​My mother’s brother is my ____. ​A. grandfather B.nephew C. uncle 4​. The opposite of expensive is ____. ​A.safe B. cheap C. empty 5​. We eat in the ____. ​A. bathroom B. bedroom C. dining room 6​. You can buy food at a ____. ​A. pharmacy B. market C. post office 7​. I need some ___ for this letter, please. ​A. keys B. stamps C. coins 8​. My brother’s daughter is my ____. ​A. granddaughter B. sister C. niece 9​. My father’s a ____. He flies all over the world. ​A. pilot B. builder C. nurse 10​. The opposite of safe is ___. ​A. dangerous B. difficult C. different VI. 1. ​Do you have a lighter or some m____? 2​. What’s your m___ phone number? 3​. This is my i___ card. 4​. Do you want to c___ a taxi? 5​. After work she g___ to the gym. 6​. A c___ is a place where you can buy medicine. 7​. He s___ for eight hours a night. 8​. The opposite of tall is s___. 9​. If you break your leg you have to go to h___. 10​. I d____ a Volkswagen. 11. ​I always w___ up early. 12​. Your son’s daughter is your g___. 13​. She often t___ by plane. 14​. I usually c____ dinner at 8.00. 7 Vocabulary total VII. Match the words with the same sounds. beautiful leave friend see juice breakfast said slow phone thought water wet Example:​red friend said wall​ 1​____ 2​____ shoe ​3​____ 4​____ home​ 5​____ 6​____ tree​ 7​____ 8​____ red​ 9​____ 10​____ VIII. Underline the stressed syllable. 1​. healthy 2​. tomatoes 3. ​beautiful 4​. aggressive 5​. summer 6​. completely 7​. vegetables 8. ​engineer 9​. behind 10. ​politician

Đề bài: Rút gọn các biểu thức A= (2x+y)^2 - (2x-y)^2 B= (x-2y)^2 - 4 (x-2y)y +4y^2

I. 1​. We ___ British, we’re American. 2. ​"What’s that?" "It’s ___ identity card." 3​. ___ your teacher live in London? 4​. I usually get up late ___ Sundays. 5​. I ___ sing, but I can play the guitar. 6​. This bag’s ___. Look! It’s got my name on it. 7​. Is ___ any milk in the fridge? 8​. I’m taller __ my brother. 9​. "Would you like to fly a plane?" "No, I ____." 10. ​I hardly ___ watch TV at the weekend. 11​. _____ were a lot of people at the cinema last night. 12​. It’s the ___ interesting book I’ve ever read. 13​. "How much coffee do you drink?" "Quite a ___." 14​. "What’s the time?" "It’s half ___ three." 15​. They ___ like the film – they left after 10 minutes. 16​. I spoke to him on the phone ten minutes ____. II. 1​. She’s my childrens’ / children’s teacher. 2​. I have always / I always have breakfast at home. 3​. They’re beautiful flowers / flowers beautiful. 4​. I don’t like get up / getting up early. 5​. We don’t have some / any money. 6​. Please drive careful / carefully. The weather’s bad. 7​. Can we meet on / in Monday evening? 8​. My father’s doctor / a doctor. 9​. I have a lot of / a lot brothers and sisters. 10​. "Is that his umbrella?" "No, it’s ours / our." III. 1​. Simon ___ (not be) at work yesterday. 2​. I ___ (buy) a new car last week. 3​. My sister ___ (listen) to music at the moment. 4​. We ___ (not have) a holiday next year. 5​. Where ___ (be) he yesterday morning? 6​. ____ you ever ___ (break) your leg? 7​. I ____ (not be) to France. Is it nice? 8​. They ____ (not drive) to London – they got the train. 9​. __ she ___ (have) a party next week? 10​. Who ___ (be) the three greatest politicians of the twentieth century? 11​. He has an exam tomorrow, so he ___ (study) now. 12​. She ___ (not like) writing postcards. 13​. How often ___ you __ (use) your mobile? 14​. Emma ___ (write) him a letter two days ago. IV. 1. ​I sometimes have an e___ for breakfast. 2​. I must buy a new w____. I’m always late for work! 3​. I gave my brother a w___ for his birthday last year. He often loses his money. 4​. I usually have s___ for lunch. I love bread. 5​. I want to write something – can I borrow your p___, please? 6​. I have a c___ at home but I don’t use it very often. I check my emails at work. 7​. I was late for work because the b____ was late. 8​. I read the n___ every day. 9​. She’s listening to the news on the r___. 10​. I read two b___ when I was on holiday last summer.

Cho e hỏi đến đó làm sao cho ra n đc ạ

Cho tam giác ABC cân tại A . Gọi M , N , H lần lượt là trung điểm của AB , AC , BC a , Chứng minh tứ giác MNCB là hình thang cân b , Gọi D là điểm đối xứng của H qua N . Các tứ giác AHCD , ADMN là hình gì ? Vì sao ? c , Chứng minh N là trọng tâm của tam giác CMD d , MD cắt AC tại E . Chứng minh BN đi qua trung điểm của HE .

anh chị nào giúp em với hưa vote năm sao

Giải thích và chọn đáp án giúp mình vs

tính : A= 1/6 - 1/35 - 1/63 - 1/99 - 1/143 - 1/195