Giúp mik vs, mik cho 5* + camon + CTLHN nha :3 A = ( $\frac{4\sqrt{y}}{2+\sqrt{y}}$ + $\frac{8y}{4-y}$ ) : ( $\frac{\sqrt{y}-1}{y-2\sqrt{y}}$ - $\frac{2}{y\sqrt{y}}$ ) a, Rút gọn biểu thức A b, Tìm y để A = -2

Moi người ơi giúp em với em đan cần gấp ạ Ai làm nhanh nhất em cho 5 sao và ctlhn nha

mọi người giúp em với bài này dùng định lí menelaus nha

giúp với!!!!!!!!!!!!! Question 1 : “Your face_____dirty, Tom." — "All right I_____it.” A. is/am going to wash B. is/will wash C. has been/am washing D. has been/will wash Question 2 : They_____the results tomorrow morning at nine o'clock. A. announce B. will announce C. will be announcing D. will have announced Question 3 : I suppose when I_____back in two years' time, they_____down all these old buildings. A. come/will pull B. come/will be pulled C. come/will have pulled D. will come/pull Question 4 : Thousands of people_____this exhibition by the end of next month. A. will see B. will be seeing C. will have seen D. see Question 5 : By the time you finish cooking they_____their homework. A. do B. have done C. will do D. will have done Question 6 : Come to see me at 5 this afternoon. I_____home until 4:30. A. don’t arrive B. won’t arrive C. are not arriving D. haven’t arrived Question 7 : No one_____when he_____tomorrow, or whether he will come at all. A. knows/will come B. will know/will come C. knows/is coming D. knows/comes Question 8 : I_____back as soon as I get through with my business. A. will come B. come C. would come D. am coming Question 9 : The police hope they_____the mystery soon. A. will have solved B. will be solving C. will solve D. will have been solving Question 10 : What_____at 10:20 pm tomorrow? A. were you doing B. will you do C. are you doing D. will you be doing Question 11 : You haven’t seen my sister for a long time. us tonight? A. Are you going to visit B. Will you visit C. Are you visiting D. Can you visit Question 12 : At this time next, week they_____in the train on their way to Paris. A. will sit B. will be sitting C. will have sat D. will have been sittingQuestion 13 : By 2025, this area_____turned into an industrial centre. A. will be B. will have been C. will D. has Question 14 : They_____English from nine to ten in this room. Don't let anyone disturb them then. A. will have B. will have had C. will be having D. have Question 15 : The car_____ready for him when he_____tomorrow. A. will be/comes B. was/came C. will have been/comes D. will have been/came Question 16 : I'm going to retire soon. By the first of next July I_____here for 25 years. A. will have been working B. have been working C. had been working D. have worked Question 17 : Don't worry. We_____the report by 11. A. finish B. have finished C. will finish D. will have finished Question 18 : Listen! There's someone at the door. I_____the door for you. A. am going to open B. am opening C. open D. will open Question 19 : “Look at those dark clouds! “Yes, it_____in some minutes.” A. will rain B. is going to rain C. are going to rain D. is raining Question 20 : It’s very hot. the window, please? A. Are you opening B. Are you going to open C. Will you open D. Won’t you open

Giúp mik vs các bạn , nhanh nhé

Giúp em với ạ em cần gấp hứa vote năm sao cộng ctlhn

8.Cho tứ giác ABCD có . Gọi M, N, P, Q là trung điểm của AB, BC, CD, DA. Chứng minh rằng bốn điểm M, N, P, Q cùng thuộc một đường tròn.

Nêu định nghĩa và tính chất của 2 tia đối nhau

Giúp em với ạ, em cần gấp ạ. Em vote 5 sao + cảm ơn ai giải chi tiết giúp em.

Mik dang can gap mong cac ban giup do mik nha