Bỏ ngoặc rồi tính (144-97)-144

các bn ơi giúp mk giải bài 16 với

mong ai đó giup mk mk sẽ vote 5 sao

1.Tính nhanh : a) -72. 17 + 72.31 - 36.228 P 2.Tìm x : ^ a) 9 - 25 = ( 7 - 3x ) - 25 - 7 P

Cho mình xin lời giải chi tiết và đáp án ạ .Mình cảm ơn

Trong mặt phẳng hệ trục tọa độ Oxy , cho tam giác ABC có A(1;-3), B(4;2), C(-2;-1) | 1) Viết phương trình tổng quát của đường thẳng A, qua A và vuông góc BC. 2) Viết phương trình tổng quát của đường thắng A, qua B và vuông góc AC. 3) Viết phương trình tổng quát của đường thẳng A, là đường trung trực của đoạn thẳng AB .

1. He says he (come) __________________ here soon 2. He always (eat) _____________ a sandwich for breakfast 3. Why _________ you (leave) _________ the party early last night? 4. John and Mary (talk) _______________ on the phone now 5. My sister never (drink) _____________ coffee 6. He thinks he (be) ________________ rich someday 7. She (meet) ______________ her old friends tonight 8. The Robinsons (come) _____________ to Ha Noi in 2007 9. Tim (try) __________________ to improve his bad habits now 10. John and Susan (get) _____________________ married last year 11. I (see) _____________ in front of the bookstore last morning 12. He (study) _________________ about 2 hours every night 13. He (be) __________________ here five minutes ago 14. Look! the teacher (look) __________________ at you 15. I (visit) _________________ my grandfather yesterday 16. Hoa always (help) ___________ her parents doing the housework in her free time 17. Hoa (have) _____________________ breakfast with her parents now 18. You (have) ________________ a lot of new friends soon 19. English (be) _______________ the most popular language in the world 20. There (be) ________________ an interesting movie on TV last night 21. Bell (invent) __________________ the telephone in 1876 22. He (not eat) _________________________ anything every evening. 23. My mother (buy) ___________________ new clothes for Tet holiday next week 24. Listen! He (talk) _______________________ about you. 25. Yesterday, she (come) ____________________ to my house. 26. My mother __________________ a sick note for me yesterday. (write) 27. She never (stay) _______________ up late at night. 28. My mother (plant) _______________ flowers in the garden last Sunday. 29. Mozart (play) _______________ the piano when he (be) ______________ three. 30. I (brush) ____________ my teeth every night, but last night I (forget)______________ to brush them. 31. She needs (eat) _______________ a lot of vegetables and fruit. 32. He (not come) _______________ to the meeting last week. 33. My father never (take) _______________ medicine. 34. There (be) __________ nobody there when I (arrive) ______________ yesterday. 35. She never (stay) ____________ up late at night 36. Water (consist) ____ ___________ hydrogen and oxygen 37. They (live) ______ ________ in Hue 3 years ago 38. Please be quiet! I (try) _________________ to concentrate the lesson. 39. Hoa (invite) ____________ a lot of friends to her birthday party next week 40. Lan and I (see) ______________________ a movie tonight 41. They (buy) _________________ their house in 2005 42. He (go) ___________to school every day by bike, but yesterday he (go) ___________to school by bus 43. Minh usually (play) ______________ football after school 44. She (brush) ___________ her teeth every night, but last night she (forget)__________ to brush them 45. My mother (plant) _______________ flowers in the garden at the moment 46. Our class (have) _____________ a new English teacher next semester 47. My baby (sleep) _______________ at the moment 48. Tomorrow, my family (go) ______________ camping at Dam Sen park 49. It (rain) ___________________ heavily last night 50. He (need) ______________ a pen right now

Giải giúp mik bài 1 đi các bạn ơi

Khi nhận 2 với một số được tích là số có một chữ số các phép nhân đó là

Đặc điểm của các mô quy định sự sinh trưởng của thực vật?