Giúp em cái này với ạ, em đang cần gấp, em cảm ơn. 1. Yesterday/when/we/fly/overhead/lava/pour/out 2.I'd like/sit/Tim and Shannon.
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TL
28 tháng 12 2020
Combine 2 sentences using Relative Pronouns:
1. There are a lot of interesting places. I'd like to visit them.
=> There are a lot of interesting places where I'd like to visit
2. I'm looking forward to the programme. It's on after the news.
=> I'm looking forward to the programme which is on after the news
3. Do you remember the hotel in Edinburgh? Your parents stayed there last year.
=> Do you remember the hotel in Edinburgh where Your parents stayed last year?
4. Those are shose. I cleaned them for you.
=> Those are shose which i cleaned for you
5. That's the old lady. Her brother won the Nobel Prize.
=> That's the old lady whose brother won the Nobel prize
6. I've lost the list. I had it in my hand a moment ago.
=> I've lost the list which i had in my hand a moment ago
7. Andrea went to see the dentist. He took out two of hos teeth.
=> Andrea went to see the dentist who took out two of hos teeth
8. Have you seen the film? It's on at the Odeon.
=> Have you seen the film which is on at the odeon?
9. Edward has just moved to France. His mother died last year.
=> Edward whose mother dided last year, has just moved to France
10. Lydia is reading that fascinating book on Spanish history. You lent it to her last week.
=> Lydia is reading that fascinating book on Spanish history which you lent to her last week
11. He cheated on me. That makes me cry so much.
=> He cheated on me why makes me cry so much
12. Mary has got the highest score in my class. That makes me surprise.
=> Mary has got the highest score in my class why makes me surprise
13. Trung's grandfather passed away. That makes him sad.
=> Trung's grandfather passed away why makes him sad
14. My test score was terrible. That makes me really disappointed.
=> My test score was terrible why makes me really disappointed
15. Tram always stay beside me when i have troubles. That makes me touched.
=> Tram always stay beside me when i have troubles why makes me touched
16. My mother baked me a cake for my birthday party. That makes me happy.
=> My mother baked me a cake for my birthday party why makes me happy
17. My brother forgot my shoes size. That makes me so frustrated.
=> My brother forgot my shoes size why makes me so frustrated
18. He did everything he could to help me. That touches me.
=> He did everything he could to help me why touches me
19. She is crying a lot. That makes me confused.
=> She is crying a lot why makes me confused
20. Tom invited me to have dinner with him in a restaurant. That makes me happy
=> Tom invited me to have dinner with him in a restaurant why makes me happy
HK
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KA
1
12 tháng 8 2021
nSO3=8/80=0,1(mol)
pthh: SO3 + H2O -> H2SO4
nH2SO4=nSO3=0,1(mol) => mH2SO4(tạo sau)= 0,1.98=9,8(g)
mH2SO4(tổng)= 100.9,8% + 9,8=19,6(g)
mddH2SO4(sau)=8+100=108(g)
=>C%ddH2SO4(sau)= (19,6/108).100=18,148%
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NV
Nguyễn Việt Lâm
Giáo viên
16 tháng 11 2021
Do vai trò của 3 biến là như nhau, không mất tính tổng quát giả sử \(x>y>z\)
Ta có: \(x-z=\left(x-y\right)+\left(y-z\right)\)
Đặt \(\left\{{}\begin{matrix}x-y=a>0\\y-z=b>0\end{matrix}\right.\)
Do \(x;z\in\left[0;2\right]\Rightarrow x-z\le2\) hay \(a+b\le2\)
Ta có:
\(P=\dfrac{1}{a^2}+\dfrac{1}{b^2}+\dfrac{1}{\left(a+b\right)^2}\ge\dfrac{1}{2}\left(\dfrac{1}{a}+\dfrac{1}{b}\right)^2+\dfrac{1}{\left(a+b\right)^2}\ge\dfrac{1}{2}\left(\dfrac{4}{a+b}\right)^2+\dfrac{1}{\left(a+b\right)^2}\)
\(P\ge\dfrac{9}{\left(a+b\right)^2}\ge\dfrac{9}{2^2}=\dfrac{9}{4}\)
Dấu "=" xảy ra khi \(\left\{{}\begin{matrix}a=b\\a+b=2\\\end{matrix}\right.\) \(\Rightarrow a=b=1\) hay \(\left(x;y;z\right)=\left(0;1;2\right)\) và các hoán vị
KA
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NL
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