Giúp mình nhaaaaaaaaaaaaaaaaaaaaaaaaaaa

Tổng của hai số là 84. Tỉ số của hai số đó là 2/5. Tìm hai số đó.

V. Complete each of the sentences using one suitable word fromthe box. assured promised complained empathized congratulated apologized offered admitted suggested encouraged

Mọi người giúp mình vs ạ sai chỗ nào bổ sung cho mình nha Sẵn tìm người kéo rank Ff

Giúp em câu 27 hàm số ạ đừng làm tắt ạ

Cho hình chữ nhật ABCD, có AB = 2AD. Từ A kẻ một đường thẳng bất kỳ cắt cạnh BC và đường thẳng CD lần lượt tại M và N. Chứng minh: 4/AM2 + 1/AN2 có giá trị không đổi.

Câu 1: chứng minh rằng tài nguyên sinh vật nước ta có giá trị to lớn về phát triển kinh tế xã hội và bảo vệ môi trường Câu 2:nêu đặc điểm chung của đất vn

Giải giúp mình nha okkkkkkkkkkkkkkkkkkkkkkkkkkk

C. WRITING Question 1: Mary went to Viet Nam last year and it was her second time. A. That was the first time Mary went to Viet Nam. B. That wasn’t the first time Mary went to Viet Nam. C. That was the second time Mary went to Viet Nam. D. That was the last time Mary went to Viet Nam. Question 2: There are many places worth seeing in London. A. There are many places of interest in London. B. There are not many places of interest in London. C. There are no places of interest in London. D. There are many places which interesting in London. Question 3: I want to visit a beautiful beach in Viet Nam. Could you suggest one? A. Do you mind if you suggested one beautiful beach in Viet Nam? B. Would you mind if you suggest one beautiful beach in Viet Nam? C. Do you mind suggesting one beautiful beach in Viet Nam? D. Could you suggested one beautiful beach in Viet Nam? Question 4: Could you help me to send this letter to my boss? A. Would you mind sending this letter to my boss? B. Do you mind send this letter to my boss? C. Would you mind send this letter to my boss? D. Would you mind to send this letter to my boss? Question 5: Yesterday we decided to paddle around West Lake in a canoe. A. We decided to go around West Lake in, a canoe yesterday. B. We decided to walk around West Lake in a canoe yesterday. C. We decided to run around West Lake in a canoe yesterday. D. We decided to ride around West Lake in a canoe yesterday. Question 6: Next year, we _________ and get jobs. A. will graduate B. will be graduate C. will graduating Question 7: I hope pollution _________ worse next year. A. will not be B. won't be C. A and B are correct. Question 8: _________ to Australia on your summer vacation next year? A. You will go B. Will you go C. Will you be go Question 9: Sky safety system _________ everyone from crashing. A. will do stop B. will stop C. will be stop Question 10: _________ use my jetpack to fly anywhere easily. A. I'll B. I will C. A and B are correct. Question 11: What problems do you think future transport _________? A. will have B. have will C. do have Question 12: I'm afraid I _________ part in your party this weekend. A. not will take B. won't take C. will not be take Question 8: I'm not sure I _________ travelling by hot-air balloon again or not. A. will trying B. will be C. will try Bài 3. Decide whether the following sentences are Correct or Incorrect in terms of grammar. Question 1: Is this yours bicycle or hers? A. Correct B. Incorrect Question 2: They won't come to the stadium by their car. A. Correct B. Incorrect

Bài 3: Cho tam giác ABC nhọn, đường cao BD và CE. Trên cạnh BD lấy M sao cho góc AMC = 900, trên cạnh CE lấy điểm N sao cho góc ANB = 900. Chứng minh tam giác AMN cân.