Đáp án:
Giải thích các bước giải: Lấy TĐ I của DO, suy ra MI//SO và MI=SO/2= acăn2/4 MI Suy ra MI⊥(ABCD)
BI=3√2/4
tanα=MI/BI=(√2/4)/3√4/2=1/3
Write complete sentences using the words / phrases given in their correct forms. You can add some more necessary words, but you have to use all the words given. 1. Young people / want / love / support / encouragement / nurture / attention / their parents. 2. Teenagers / need / "helpful attention" / rather / protective. 3. Helpful attention / mean / parents / be interested / who / the children / be / and / what / they / do. 4. Parents / try / listen / their children / although / it / sometimes inconvenient. 5. Parents / encourage / children / learn / their mistakes / rather / show them / hot / to it.
*Finish each of the following sentences in such way that it means exactly the same as the sentence given before it. 1. "Why hasn't Nam phoned?" she wondered. - She wondered ..................................................................................................... . 2. The thief tried to escape but the police stopped him. - The police prevented the thief ...................................................................................... . 3. Lan began studying English ten years ago. - Lan has ................................................................................................................. . 4. My mother made these curtains. - These curtains ........................................................................................................ . 5. "lfl were you I wouldn't trust Diep", Lan's mother told her. - Lan's mother advised ............................................................................................... . 6. Nam is better at chemistry than Tuan. - Tuan is not ........................................................................................................... . 7. His parents made him study for his exams. - He was .............................................................................................................. . 8. I only help you if you promise to try harder. - Unless .............................................................................................................. . 9. She bought that house in 1994. - She has .............................................................................................................. . 10. They believe that he is mad. -He ................................................................................................................. . 11. It was such a boring film that he fell asleep. - The film ........................................................................................................ . 12. We spent three hours getting to HO CHI MINH City. - It took ................................................................................................................. . 13. She does not usually stay up so late. - She's not used ..................................................................................................... . 14. This is his first visit to Date. - He is .................................................................................. -.................... ; .......... . 15. It was his own fault that he lost his job. He was late for work every morning. - If .............................................................................................................................
Cho tam giác ABC có góc =60 độ biết AB+AC=12cm tìm AB,AC biết BC=8
Give the correct form of each word in the bracket to complete sentence 1.I seldom visit art gallery .I am not very ............ in art(surprise) 2.We are ............at her success.Her success is ..............(surprise) 3.It was an ............ story(amuse) 4.The program on T.V tonight is............... We are ...............with watching the same program every night (bore) #Yumi
we overheard them say that they didn't really like the food-> they...
tìm max của A=2-5 căn x /3+căn x
chuyển chủ động -> bị động: i could hear someone crying in the next room
chuyển câu chủ động sang bị động : my parents made me change my minds but i didn't
Thế nào là hợp tác cùng phát triển?Hãy nêu một số ví dụ về sự hợp tác quốc tế?hợp tác quốc quốc tế đem lại lợi ích gì cho nhân loại,cho Việt Nam và cho bản thân em? Bác Hồ đã từng nói:''Dân ta có một lòng nồng nàn yêu nước.Đó là một truyền thống quý báu của ta''.Bằng hiểu biết của mình em hãy làm nổi bật truyền thống trên
Cho tam giác ABC có góc B=60 độ AC+AC=12cm tính AC,AC BC=8cm chú ý: ko đùng cos
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