Câu 9. Năm nay tuổi mẹ gấp 15 lần tuổi con, hai năm sau tuổi mẹ gấp 8 lần tuổi con. Hỏi hiện nay mẹ bao nhiêu tuổi.

Vẽ sơ đồ nguyên lí của mạch đèn nhà kho .

Tìm tất cả các số tự nhiên n để (5n + 9) chia hết cho (n + 1 )

Đặt câu với từ trường học sử dụng cặp quan hệ tăng tiến

đầy đủ + chi tiết Kể chuyện

C= x ( x - 3 ) ( x + 3 ) - ( x + 1 ) ( $x^{2}$ - 7x ) tại x = $\frac{2}{3}$

vẽ mikey [sano] tong băng touman

Cho tổng S=6+$6^{2}$ +$6^{3}$ +...+$6^{21}$ Tổng S có chia hết cho 7 không? Tại sao?

I. Complete the table Personal Pronoun Object pronoun Possessive adjective Possessive Pronoun I me My mine You We They He She It II. Circle the correct answer 1. (Me/ My/ I) mother always cooks for (our / us/ your). 2. (I/ He/ We) doesn't know (him/ her/ you) name. 3. David's sister is very hard working. (Her/ His/ My) marks are really brilliant! 4. What do (he/ she / you) eat when you go to a Chinese Restaurant? (It/ He/ I) eat pork. I like (them/ it/ you)! 5. I watch (his/ her/ your) programme every afternoon. (You/ He/ She) is a really good actress. 6. David is my best friend. (He/ She/ I) play with (him/ her/ you) and (their /her/ his) sister every Saturday. 7. I like the piano very much, but I don't play (it/ him / me). 8. (Me/ My/ I) daughter takes care of (his/ us/ her) baby brother. 9. (You/ He/ Me) don't brush (my / your/ his) teeth after every meal. 10. (Its/ My/ Me) uncle and my aunt have got a computer. (They/ It/ We) is old and (they/ their/ your) need to repair ( me/ them / it). III.- Rewrite the following sentences. Substitute possessive pronouns for the bold words 1.- Their house and our house are on the same street. => ........................................ 2.- Those jeans are my jeans. => .................................. 3.- The dictionary is Paul's. => ....................................... 4. The black car is my mother's car. => ............................ 5. Is this my dictionary or your dictionary? => ................................... III. Rewrite sentences 1. I quite like classical music now, although I wasn’t keen on it when I was younger. => I used to .................... 2. Dennis gave up smoking three years ago. Give up: từ bỏ => Dennis used to..................................................................................................................................... 3. My parents lived in the USA when they were young. => My parents used to....... 4. Jim was my best friend, but we aren’t friends any more. => Jim used to...........................

Năm nay tuổi mẹ gấp 15 lần tuổi con, hai năm sau tuổi mẹ gấp 8 lần tuổi con. Hỏi hiện nay mẹ bao nhiêu tuổi.