Cho tam giác ABC . Trên cạnh AB lấy điểm D , trên cạnh AC lấy điểm E . Gọi M, N lần lượt là trung điểm của BE và CD . Đường thẳng MN cắt tia AB và AC lần lượt là tại P và Q . Hỏi hai điểm D và E phải có điều kiện gì để tam giác APQ cân tại A ?

.Iem đg rứt cần .Các ank cj giúp emk .hứa vote 5* và clhn

Hình chữ nhật có chiều rông kém chiều dài là 5m, diện tích nó bằng 300m vuông. Tính chiều dài, chiều rộng ?

helpp meeeeeeeeeeeeeeeeeeeeeeeeeeeeee

“ Tuổi thơ chở đầy cổ tích Dòng sông lời mẹ ngọt ngào Đưa con đi cùng đất nước Chòng chành nhịp võng ca dao Con gặp trong lời mẹ hát Cánh cò trắng, dải đồng xanh Con yêu màu vàng hoa mướp “ Con gà cục tác lá chanh” … Thời gian chạy qua tóc mẹ Một màu trắng đến nôn nao Lưng mẹ cứ còng dần xuống Cho con ngày một thêm cao Mẹ ơi trong lời mẹ hát Có cả cuộc đời hiện ra Lời ru chắp con đôi cánh Lớn rồi con sẽ bay xa =>chỉ ra thành p biệt lập

1.my father was pleased when he learned that i had passed entrance exam to high school -> my father ....................................... 2.she was so rude to shout at his face in the department store -> It was ..............................

50. -----------, Mrs Pike took the baby in her arms. A. To smile happily B. Smiled happily C. smiling happily D. as soon as smiling happily 51. These workers stopped-------- some coffee because they felt sleepy. A. to have B. have C. having D. had 52. Due to having a lot of things----------- last night,we missed----------- the film. A. for doing/to see B. done/saw C. doing/see D. to do/seeing 53. I want to travel because I enjoy---------- people and---------new places. A. meet/see B. meeting/seeing C. meeting/to see D. to meet/to see 54. The council considers----------vehicles from the city center to relieve traffic jams and air pollution. A. ban B. banning C. banned D. to banning 55. He risked -------- his house when his company went bankrupt. A. lose B. to lose C. losing D. lost 56. Did you notice someone---------the room last night? A. enter B. to enter C. entered D. entering 57. Loyalty is considered---------- one of the important qualities for true friendship. A. being B. been C. to be D. be 58. Those tourists were too tired----------their journey. A. continue B. to continue C. continuing D. continued 58. He didn’t permit them----------- through the military zone. He forced them---------another way. A. going/to go B. to go/to go C. to go/going D. go/go 59. His doctor advised him---------,but he found it impossible--------- his habit. A. stopped smoking/quit B. to stop to smoke/quitting C. stopping smoking/for quitting D. to stop smoking/to quit 60. It takes three hours----------- to Paris. A. getting B. get C. got D. to get 61. They are whispering to avoid---------- by their friends. A. being heard B. hearing C. to be heard D. being hearing 62. I remember--------- my mother said the carpets needed----------. A. to hear/to clean B. to hear/cleaning C. hearing /cleaning D. hearing/to clean 63. Would you like---------- me some tea? A. make B. making C. made D. to make 64. They reminded me---------- late. A. to not come B. not coming C. not to come D. to come not 65. The police let him ---------- after they had asked him some questions. A. to leave B. leave C. leaving D. left 66. Would you mind---------- me your pocket calculator? A. lend B. to lend C. lending D. lent 67. Despite--------- very rich, she is often generous to the poor. A. is not B. not being C. not to be D. is not 68. She wanted-------- home but the boss made her---------- until she finished-------- those contracts. A. to go/stay/typing B. going/to stay/to type C. to go/staying/type D. go/stay/typed 69. John suggested----------- to the new branch in Vietnam. A. appointing B. being appointed C. to appoint D. to be appointed 70. Peter is not used to--------in front of the public. He often feels too nervous-----------anything. A. speak/to say B. speak/saying C. spoken/for saying D. speaking/to say 71. Sorry. I forgot---------- this floppy disk to him. A. give B. to give C. giving D. gives 72. I hate-----------. It’s so boring. A. to keep waiting B. to be kept waiting C. being kept waiting D. keep to wait 73. Everyone likes--------- when they have got some success. A. to congratulate B. to be congratulate C. to be congratulating D. being congratulated 74. She expected-------- soon,but things seem---------wrong. A. promoting/going B. being promoted/to go C. to be promoted/to go d/to promote/going 75. It is not worth--------- that computer. You had better--------- a new one. A. to repair/to buy B. repairing/buy C. repairing/buying D. repair/buy

giúp e câu này nữa ạ vào trang các nhân giúp e câu còn lại với :(

Tìm hàm số y=f(x) Biết rằng F(x^3+1)=x^6+2x^3+4, với mới x thuộc R

Exercise 2: Put the given words into the right group. worried delighted confident depressed left out embarrassed calm relaxed frustrated Positive feelings Negative feelings