Cho tam giác ABC. Gọi M, N, B lần lượt là trung điểm của AB,AC,BC.Gọi I là giao điểm của AB và MN. Chứng minh IA=IB, IM=IN

1. Give the correct form of the verbs with the present continuous in brackets. 1. They ( practice ) English at the moment 2. Look ! Minh ( go ) sailing 3. The children ( watch) .tv at the moment 4. My father ( listen ) to the radio now 5. Where is your mother ? She ( have ) dinner in the kitchen 6. Mr. Nam ( not work ) at the moment 7. The student ( not , be ) in class at praesent 8. The children ( play ) in the park at the moment 9. Look ! The bú ( come ) 10. What you ( do ) at this time Nam ? 2 . Fill in the blanks with the present simple of the verbs in brackets 1. Lan ( have ) breakfast and ( go ) to school at 6.30 a.m 2. We ( not read ) after lunch 3. Tom ( be ) my friend . He ( play ) sports everyday 4 . your students ( play ) soccet every aften ? 5. He ( go ) to bed at 11.30 p.m 6. They ( go ) home and ( have ) lunch 7. he ( play ) sports ? 8. He ( teach ) English in a big school in town 9. Everyday she ( go ) to work by bike 10. We usually ( read ) books , ( listen ) to music or ( watch ) Tv Giúp mình với

Bài 1.Hai tủ sách có tất cả 664 quyển sách. Biết rằng khi chuyển 3/4 số sách ở mỗi tủ thì số sách chuyển đi ở tủ một hơn số sách chuyển đi của tủ hai là 48 quyển sách. Hỏi lúc đầu mỗi tủ có bao nhiêu quyển sách? Bài 2.Một mảnh vườn hình chữ nhật có chu vi bằng 5 lần chiều rộng . Nếu mở rộng thêm mỗi chiều 2m thì diện tích tăng thêm 64 m2 . Tính diện tích mảnh vườn sau khi mở rộng

Tính A+B A=3x^3-2x^2-x+2 B=2x^3+7x^2-4x+3

Làm giúp em bài này vs nha!! SNT là số nguyên tố nhé

I, Fill in each blank with the correct word in the box. [ considered / product / accuracy / development / depression / illegally / period / Cultivating / scenery / perfection ] 1, Tea in any of the above uses means a plant ____________ , medicinally processed into a dry form, used to make drinking water. 2, Unemployment and inflation are symptoms of economic ____________ . 3, The Agricultural Bank is lending money to poor households for economic _____________ . 4, The person who is _____________ shy, the best in a certain field is usually production, business, sports, art ... 5, Technical users _____________ enter data on other people's computers to exploit or sabotage. 6, Technology is based on modern science and technology, with high _____________ and economic efficiency. 7, The days passed quickly, just spring, but it was March _____________ , the scent of spring flowers and flowers filled the place. 8, The ___________ here in the sunset is calm and a little sad. 9, Each person has their beauty and ____________ . 10, _____________ vocabulary in addition to correctly understanding the meaning to use, you also need to enrich your vocabulary by knowing new words.

hòa tan hết 10,4g hỗn hợp 3 kim loại X,Y,Z cùng có hóa trị II bằng 1 lượng vừa đủ dung dich HCl2M thấy thoát ra 6,72 lít H2 o dktc a,tính thể tích dung dịch HCl2M? b,xác định 3 kim loại trên,biết tỉ lệ về khối lượng mol và số mol trong hỗn hợp ban đầu tương ứng là 3:5:7 và 3:2:1

......You ( buy) .......a new bike yesterday?

Excercise 2. The past simple. 1-Lan cleaned the room yesterday. ->The room 2-They built this bridge in 1979. ->This bridge 3-Ba invited Liz to the rice cooking festival. ->Liz 4-Miss Thanh taught me how to draw. ->I 5-Santa Clause gave the children presents. ->The children -> Presents 6-My father decorated the christmas tree. ->The christmas tree 7-They didn't clean the room yesterday. ->The room 8-Nam didn't use this room years ago. ->This room 9 Nobody used this computer yesterday . -> This computer 10-*Nobody informed me about the change of the plan. -> I 11-Did they give Linh the dictionary? -> Linh 12-How did you make these cakes ? ->How

Tìm những giá trị nguyên của x để các biểu thức sau có giá trị nguyên a. 3-2a/a-4