Cách tính chu vi và diện tích hình thoi như thế nào?

Đây là hình vẽ mô tả một công tắc mạch điện những mik ko biết làm các bạn giúp mik nhé

a,Từ "nhưng''trong câu " Bạn ấy học giỏi nhưng lười" là ......từ b,Từ tư duy trong câu "đây là cách phát triển tư duy" là......từ

Giúp mình bài cuối với ạ. Bài này chỉ cần chọn 1 trong 2 ý

hộ đi nè hứa 5 sao Bài 4 :Tính giá trị của biểu thức sau tại các giá trị đã cho tương ứng a. 15x ³ y ³ z ³ tại x = 2; y = - 2; z = 3 b. -1/3 x ² y ³ z ³ tại x = 1; y = - 1/2 ; z = - 2 Bài 5: Một mảnh vườn hình chữ nhật có chiều dài x (m), chiều rộng y (m) (x, y > 4). Người ta mở một lối đi xung quanh vườn (thuộc đất của vườn) rộng 2m. a) Hỏi chiều dài, chiều rộng của khu đất còn lại để trồng trọt là bao nhiêu (m)? b) Tính diện tích khu đất trồng trọt biết x = 15m, y = 12m? Bài 6 : Tính giá trị của biểu thức sau tại các giá trị đã cho tương ứng a. 6a ³ - a 10 + 4a ³ + a 10 - 8a ³ + a với a = - 2

Cho m gam hỗn hợp A gồm Fe2O3 và Cu tác dụng với dd HCl dư, thu được dd B và 1 gam chất rắn chưa tan. Cho dd NaOH dư vào dd B, thu được kết tủa C. Lọc kết tủa C rồi đem nung trong không khí đến khối lượng không đổi thu được 32 gam chất rắn. Xác định m. Biết các phản ứng xảy ra hoàn toàn

Exercise 1: Find the word which has different sound in the part underlined. read the words aloud. 1.a. pastime b. winter c. ice d. bike 2. a. sandwich b. chair c. school d. chicken 3. a. gram b. packet c. many d. want 4. a. engineer b. greeting c. teeth d. street 5. a. couches b. boxes c. houses d. tables Exercise 2. Choose the best answer a, b, c or d to complete the sentence. 6. Why _____ we go to the movie? – Good idea. a. do b. don't c. are d. aren't 7. My grandfather _____ fishing in his free time. a. does b. do c. goes d. go 8. _____ your friend like hot drink? a. Do b. Does c. Is d. Will 9. What _____ your favorite sport? a. do b. does c. is d. are 10. They are _____aerobics now. a. play b. playing c. doing d. do 11. Lan and Nam _____tennis on the playground. a. plays b. are playing c. is playing d. play 12. They _____ fishing in the winter. a. not go b. don't go c. doesn't go d. aren't going 13. He usually _____ in the morning. a. is jogging b. jog c. jogs d. jogging 14. We _____ the news at the moment. a. watch b. is watching c. are watching d. watches 15. The weather _____ fine today. The sun _____. a. is/ is shining b. to be/ shining c. are/ shines d. am/ shine Exercise 3: Read the followingpassage, then choose the correct answer a, b, c or d. Jack is my best friend. He is a teacher. He's teaching in a school in London. Every morning he gets up at about 7 o'clock, has breakfast and a cup of coffee. Then he leaves for work. The school is far from his home, so he can't walk there. He must go by bus. he has lunch at a restaurant nearby. In the afternoon he works until 5 or 5.30 and then he goes home. He doesn't work on Saturdays or Sundays. He goes to the cinema or theater. He is married and he has a son. He loves his family. They are very happy. 16.What's Jack's job? a. a student b. a teacher c. a writer d. a doctor Nguyen Thi Thu Hien – Kieu Phu School 2 17. What does leaves for means? a. run to b. swim to c. fly to d. go to 18. What's his favorite drink? a. milk b. tea c. coffee d. lemonade 19. Accoring to the passage, which of the following statements is not true? a. He doesn't have lunch at home. c. He doesn't have any son. b. He works in a school. d. He goes to work by bus. 20. What does he do at the weekend? a. He teaches his students b. He goes to the cinema or theater c. he comes back home. d. He watches television. 21. How does he go to work? a. By car b. On foot c. By taxi d. by bus 22. Where does he have lunch? a. At home b. At work c. At school d. At a restaurant 23. How often does he work? a. Every day b. Five days a week c. Six days a week d. Four days a week 24. What time does he go home? a. after 5.00 b. after 5.30 c. both a and b c. 4.00 25. How many children does he have? a. one b. two c. three d. a lot Giúp vs ạ

Lớp 5A có 32 bạn, trong đó có 14 bạn nữ. Tỉ số phần trăm của số học sinh nữ và số học sinh của lớp là: A. 0,4375% B. 4,375% C. 43,75% D. 4375% giúp mk với mk đang vội

I.Identify whether the sentences are simple, complex, compound sentences. 1. We met rather few people who spoke English. 2. I have been on rather too many planes and trains recently. 3. We drove right up to Helsinki in two days. 4. I don’t care how expensive it is. 5. Two minutes ago the child was fast asleep, but now he is wide awake. 6. He is not tall enough to be a soldier. 7. I guess she just doesn’t respect you. 8. I have got four sisters and each of them is quite different from the others. 9. You can either come with me now or walk home. 10. He will never leave home because he hasn’t got the courage to.

II – Choose the best answer from the four options given (marked A, B,C, or D) to complete each sentence. 6. I can’t understand what the French talks about the problem. I wish I________ French. A. knew                     B. will know                 C. know                      D. have known 7. The Phu Cuong Church ________ about 5 years ago. A. is built                  B. was built                   C. will be built            D. has been built 8. Many farmers who live in Thuan An are going to celebrate their festival ________ is called Fruit festival. A. whose                  B. who                         C. which                     D. where 9. ________I was exhausted, I would finish my work. A. Though                B. So                           C. Therefore              D. Because of 10. Huy is very tired. ________, she has to finish her assignment before going to bed. A. Although              B. So                          C. Therefore               D. However 11. I suggest we ________ some money for the poor. A. raise                    B. shall raise               C. should raise           D. raising 12. He asked me if I________ an Iphone – X the following day. A. buy                        B. will buy                C. bought                    D. would buy 13. I ________telephone her if I knew her number. A. would                    B. have to                  C. will                        D. shall 14. Honda motorbikes________ in Viet Nam. A. produce               B. will produce            C. are produced        D. would be produced 15. We have learnt Korean ________2001. A. for                          B. since                      C. in                         D. during 16. We________ already________ Hoi Khanh Pagoda. A. were/ seeing          B. have/ seen            C. are/ seeing          D. will/ see 17. All the houses in the area________ immediately. A. has to rebuilt         B. had to rebuild         C. have to be rebuilt         D. have to rebuild 18. If he________ soon, he might miss the train. A. isn’t coming         B. doesn’t come         C. won’t come                   D. didn’t come 19. Mss. An said that he________ in Binh Duong New City. A. lived                    B. is living                   C. has lived                      D. will live 20. Your daughter works in a foreign company, ________she? A. isn’t                    B. didn’t                       C. wasn’t                          D. doesn’t