mong mọi người chỉ giúp em đang cần gấp ạ hứa sẽ vote 5 sao

Cách cm đường trung bình hình thang, tam giác ?

III. Use the right form of TO – INFINITIVE or GERUND: 1. I suggest (call)__________ an ambulance for the injured boy. 3. Have you finished (work)__________ on this project? 4. Is there anything here worth (buy)__________? 5. You have to avoid (drive)__________ in heavy traffic. 6. He has postponed (take)_________ the trip. 8. We are looking forward to (see)__________ you here. 9. Would you mind (lend)__________me $ 5? 10. The headmaster doesn’t permit (smoke)_________ during the meetings. 14. Try (forget)________it; it isn’t worth (worry)_______ about. 15. I am not used to (type) ________ the reports in Vietnamese. IV. Put the verbs in parentheses in the correct form(PASSIVE INFINITIVE or GERUND): 1. That man seems (trust)_______ by everyone. 2. Mr. Forster hopes (transfer)__________ to New York by his company. 3. No one enjoys (deceive)__________ by another person. 4. I absolutely refused (cheat)________ by them in that manner. 5. We appreciate (inform)_________ about the matter promptly= quickly. 6. Naturally, I would like (promote)________ to higher position. 7. That author doesn’t mind (criticize)__________ by his friends. 8. The whole problem certainly needs (consider)_________ very carefully. 9. That fellow couldn’t avoid (choose)__________ into military service. 10. I really didn’t expect (introduce)___________ to the president.

tính thể tích dd hcl 2m cần cho vào 150ml dd hcl 0.4m để thu đc dd mới nồng độ 1.2m

1*5+2*6+3*7+...+100*104 2^2+4^2+6^2+...+30^2

Cứu em với ạ !!!!!!!!!!!!!!!!!!!!!

mong mọi chỉ giùm em với ạ , hic em hỏi 2 3 lần chưa có ai trả lời mong mọi người chỉ giùm hứa sẽ vote 5 sao ạ, T T

Cho `xyz = 1` và `x,y,z > 0` . Tìm `min` `A` : `A = ∑1/(x^2 + x + 1)` `=>` Giải bằng `2` cách

A=x+2/x+3 - 5/(x-2)(x+3) Tìm x thuộc Z để A nhận giá trị nguyên Rút gọn

Helps me ! Mn giúp em vs ak !rm đăng cần gấp