đường trung trực là gì ? Tính chất của đường trung trực.

Mn ơi giúp em câu 3, 4 với ạ Em cảm ơn

tìm a,b,c 2a/3=3b/4=4c/5 và a+b+c = 49

Giúp mình giải chi tiết bài hình câu 6 này với ạ.

Calli: Thú zị NL: Anh em chỉ tui vài bí kíp tán gái dzớ :)

Change each sentence into a question using the question words in brackets

Viết phân số 2/3 thành tổng của hai phân số tối giản khác nhau

Giúp em với ạ ai giỏi toán làm hết bài nha 60 điểm đó

26) Last winter Robin..........................with his father in the Alps for three days. (stay) 27) Ellen..........................with her left hand. (always/ write) 28) She...............................a language course in Paris last summer. (do) 29)......................anyone...........................yet? (phone) 30) I...............Paul today, but I.................him last Sunday. (see) 31) Last night I (lose)___________ my keys - I had to call my flat mate to let me in. 32) I (lose)___________ my keys - can you help me look for them? 33) I (visit)___________ Paris three times. 34) Last year I (visit)___________ Paris. 35) I (know)___________ my great grandmother for a few years - she died when I was 36) I (know) ___________ Julie for three years - we still meet once a month. 37) I (play) ___________ Hockey since I was a child - I'm pretty good! 38) She (play) ___________ hockey at school but she didn't like it. 39) Sorry, I (miss) ___________ the bus - I'm going to be late. 40) I (miss)___________ the bus and then I (miss) ___________ the aero plane as well! 41) Last month I (go)___________ to Scotland. 42) I'm sorry, John isn't here now. He (go)___________ to the shops. 43) We (finish)___________ this room last week. 44) I (finish)___________ my exams finally - I'm so happy! 45) Yesterday, I (see)___________ all of my friends. It was great. Ex 4: Put the verbs into the correct tense (simple past or present perfect simple).

Huhu, giúp em với!!!! Nhanh nha m.n, đáp án luôn