Thế kết quả đã rút gọn ở trên vào phần màu vàng thì làm sao để mình tính ra được phương trình màu vàng tương đương bên cạnh ạ

giúp vs ạ làm hhoj mình mình cho 5 sao = ctlhn

Bài 3 : Thực hiện phép tính 1 + 1/2 + 1/4 + 1/8 + 1/16 ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ 1 - 1/2 + 1/4 - 1/8 + 1/16

tìm x,y thuộc Q mng giúp vs nhanh lên ah em cần gấp

Bài 1: Tìm x a)15xX=30 b)40+x=50 c)x-5=20

giúp tớ iiii đừng bỏ tớ thế nx :((( P/s có thể tt qua phần HỎI CHI TIẾT nhóooo

giúp mình với ạ! mình hứa sẽ cho 5* ạ! (HÌNH VẼ) Chứng minh Tam Giác DJK vuông cân tại J nếu : 1) AJ=1/4AC . K là trung điểm CB 2) O là giao điểm AC , BD và AJ/AO=BK/BC

Calli : Giảm cân Mọi ngừi có cách giảm cân nào ko sắp đi học ùi :<

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III. Choose one sentence that is closest in meaning to each of the following questions. 1. They last visited me five years ago. A. They haven’t visited me for a long time. B. I haven’t been visited for a long time. C. They haven’t visited me for five years. D. They have known me for five years. 2. Mike turned off the light, then he went to bed. A. Before Mike went to bed, he had turned off the light. B. Before Mike turned off the light, he had gone to bed. C. After Mike had gone to bed, he turned off the light. D. Mike turned off the light as soon as he had gone to bed. 3. I haven’t visited the museum for three months. A. It is three months since I visited the museum. B. I didn’t visit the museum three months ago. C. The last time I visited the museum was three months ago. D. A and C are correct. 4. “John began playing the piano 10 years ago” A. John played the piano 10 years ago. B. John has played the piano for 10 years. C. John used to play the piano 10 years ago. D. John doesn’t play the piano anymore 5. I haven’t seen her for 3 weeks. A. I haven’t seen her since 3 weeks. B. She was seen for 3 weeks. C. It’s 3 weeks since I last saw her. D. It’s 3 weeks before I last saw her. help me pls