TÌM X BIẾT : 3x² - 7x - 4 = 0 HELPP Ạ

Giải giúp mình đi ạ mình cần gấp lắm ạ🙁😣😣

trong trường hợp nào dưới đây vật được coi là chất điểm A : trái đất chuyển động xung quanh mặt trời B : quả bưởi rơi từ bàn xuống đất C : người hành khách đi lại trên xe ô tô D : xe đạp chạy trong xong sân nhỏ

ai giúp em gấp mấy bài này với ạ, em cảm ơn

chuyển các câu vs động từ tường thuật sang câu bị động 1,They think that he has died a natural death 2,Some people believe that 13 is an unlucky number 3,They say that John is the brightest student in class 4 ,they reported that the President had suffered a heart attack 5,l knew that they had told him of the meeting

I. Choose the word which has the underlined part pronounced differently from the others 1. A. brushed B. touched C. laughed D. needed 2. A. waste B. wash C. wall D. walk 3. A. bread B. meat C. head D. ready 4. A. rulers B. tents C. stamps D. books 5. A. watches B. dishes C. clothes D. classes . 6.A. house B .home C. hour D. hotel 7. A. christmas B. architect C. lunch D. school. 8. A. thought B. think C. with D. tooth 9. A. money B. love C. brother D. move 10. A. chopstick B. touch C. catch D. stomach Section b : vocabulary and grammar I. Choose the word or phrase which best completes each sentence.( Chọn đáp án đúng ) 1. Nam is now staying ................................. his uncle’s . A. with B. in C. on D. of 2. ............................ did you do your homework ? – Yesterday afternoon. A. When B. Where C. What time D. How 3. She enjoys............................. community service. A. do B. doing C. does D. to do 4. Lan is never late for class and ............................ are we. A. neither B . so C. too D. either 5. Hoa likes watching “ Tom and Jerry ”. It’s her favorite .......................... A. subject B. cartoon C. song D. music 6. What ………….interesting news ! . A. an B. a C. the D. – 7. …………can’t do this exercise because it’s very easy. A. Anybody B. Somebody C. Nobody D. Everybody 8. If you have a bad cold , you should ……………………….some panadols. A. drink B. eat C. take D. chew 9. My mother has ……………..free time than my father. A. a few B. a little C. fewer D. less 10. Hoa knew ........................... to use a sewing machine. A. which B. what C. how D. where II. Each sentence has a mistake. Find and correct it. 1. Ba practicing playing the guitar in his room at the moment A B C D 2. My uncle grows vegetables and cattles on his farm. A B C D 3. We always have a three-months summer vacation A B C D 4. In Vietnam, one of the most popular activity after school is soccer. A B C D 5. The teacher said you shouldn’t spend much time to play video games. A B C D 6. The library in our school has hundred of interesting books A B C D 7. When I saw Mai . I thought She looked very happily. A B C D 8. How old will Nga is on her next birthday ? A B C D 9. Ba has lots of English books . He will borrow Lan some. A B C D 10. How do you go to see the dentist? – Once or twice a monh. A B C D III. Give the correct forms of the words in brackets to complete the sentences below. ( Cho d¹ng ®óng cña c¸c tõ ë trong ngoÆc ®Ó hoµn thµnh c¸c c©u sau) 1. We can’t go out now because it is very ……… ( rain ) 2. Minh looks………… again. What the matter with him ? ( worry) 3. Some of the ………….of the computer games are as young as 14 or 15. ( invent ) 4. The nurse wanted to know Nga’………………and weight. ( high ) 5.You should wash the fruits …………. before eating them. (care) 6. He has a lot of stamps in his ……………… ( collect ) 7. She never touches ………………and keeps the dentist away .( health ) 8. This knife is…………………. It can’t cut anything. ( use ) 9. People of all………………….. can join this activity. ( able ) 10. He had an accident,because he drove very………… ( care )

giải giúp mình bài hình này ạ sẽ vote 5 sao

Cho hình vẽ dưới đây, biết `Ky||Ax, Ky||Mz` a) Tính góc AKy b) Chứng minh rằng AK vuông góc với MK

a, x × 5,6 < 7,8 b, 10,67 < x × 2 < 12,35

giúp em với ạ em vote cho 5 sao và cảm ơn kèm ctrl hn