We (help) you but you didn't tell us that you were in trouble
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Give the correct form of the words in brackets.
Hoa is the most .....Helpful..... student in the class (Help)
What do ...Teenagers....... often do in their free time? (Teen)
Television is one of the most popular means of .... entertainment...... (Entertain)
1. Is - aren't
2. climb ( v inf)
3. are - am not
4. do - live. is
chúc bn học tốt :)
1. ........Is..... her bag(be)? no,they(not be) aren't.....
2. the monkey can (climb)..climb .... the tree
3. Are you(be)in 4a? no i (not be) amnot
4...Do you live....you (live).... near a market? it(be) is noisy
1 Did you eat some / any rice ?
2 My father asked some information / informations about the new service
3 Some cats has / have got big ears
4 Have your parents got any free time / times ?
5 Can you see some / any clouds in the sky?
6 Tina has got some box / boxes
7 Does / Do any student leave their homework at home ?
1 . I read some / any books on my holiday
2 . Jim hasn't got any money / moneys for the ket
3 . Sam always buys some / any bread
4 . I didnt't put some / any salt into the soup yesterday
Bài làm:
Ta có: \(\frac{a}{b}=\frac{b}{c}\) => \(b^2=ac\)
Thay vào ta được: \(\frac{a^2+b^2}{b^2+c^2}=\frac{a^2+ac}{ac+c^2}=\frac{a\left(a+c\right)}{c\left(a+c\right)}=\frac{a}{c}\)
Vậy \(\frac{a}{c}=\frac{a^2+b^2}{b^2+c^2}\)
Đặt \(\frac{a}{b}=\frac{b}{c}=k\Rightarrow\hept{\begin{cases}a=kb\\b=kc\end{cases}}\Rightarrow a=k^2c\)
\(\frac{a^2+b^2}{b^2+c^2}=\frac{\left(k^2c\right)^2+\left(kc\right)^2}{\left(kb\right)^2+c^2}=\frac{k^4b^c+k^2c^2}{k^2b^2+c^2}=\frac{k^2\left(k^2b^2+c^2\right)}{k^2b^2+c^2}=k^2=\frac{a}{c}\)( đpcm )
1.It seems that our proposal has been accepted by him
2.It is ly that charges will be press against him
3.It seems that he has forgotten our appointment
4.It seems that your car has been taken by your brother without asking you first
5.Its ly that the school will expel John
6.It seems that she was trying to warn you
7.It seems that Sally lied about it all long
8.My mother will probably be angry when I het home
9.It seems that Mrs.White has got married again
10.My boss will probably resign next year
helped
đáp án là: help
Chúc học tốt!