giúp mk bài này
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1 My parents go shopping twice a week
2 Hoa's house has a balcony
3 My brother usually plays badminton with his friends
4 My favorite book is Tam and Cam. What is yours?
5 There are 10 pencil cases on the table
Cái nào mình viết the là có, còn k viết là ko nhé
1 the - ko - ko - the news - the radio
2 ko - the
3 ko - ko - the - the - the - the
4 the - ko - ko
5 ko - ko - ko
6 ko - the
7 ko - ko
8 ko - ko - ko
9 the - the - ko
10 ko - the - the - the
11 the - ko
12 the - the - the
\(a,\Leftrightarrow3m-2+m-2=2\\ \Leftrightarrow m=\dfrac{3}{2}\\ b,\text{PT giao Ox: }y=0\Leftrightarrow x=\dfrac{2-m}{3m-2}\Leftrightarrow OA=\left|\dfrac{m-2}{3m-2}\right|\\ \text{PT giao Oy: }x=0\Leftrightarrow y=m-2\Leftrightarrow OB=\left|m-2\right|\\ \Leftrightarrow S_{AOB}=\dfrac{1}{2}OA\cdot OB=\dfrac{1}{2}\cdot\left|\dfrac{m-2}{3m-2}\cdot\left(m-2\right)\right|=\dfrac{1}{2}\\ \Leftrightarrow\dfrac{\left(m-2\right)^2}{\left|3m-2\right|}=1\\ \Leftrightarrow\left|3m-2\right|=\left(m-2\right)^2\Leftrightarrow\left[{}\begin{matrix}3m-2=m^2-4m+4\left(m\ge\dfrac{2}{3}\right)\\2-3m=m^2-4m+4\left(m< \dfrac{2}{3}\right)\end{matrix}\right.\\ \Leftrightarrow\left[{}\begin{matrix}m^2-7m+6=0\left(m\ge\dfrac{2}{3}\right)\\m^2-m+2=0\left(vn\right)\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}m=1\\m=6\end{matrix}\right.\)
a) \(3Cl_2+2Al\rightarrow2AlCl_3\)
b)\(Cl_2+H_2\rightarrow2HCl\)
c)\(Cl_2+H_2O⇌HCl+HClO\)
d)\(3Cl_2+6KOH\rightarrow3H_2O+5KCl+KClO_3\)
\(\frac{a}{b}=\frac{b}{c}=\frac{c}{d}=\frac{d}{e}=\frac{2009b}{2009c}=\frac{2020c}{2020d}=\frac{2021d}{2021e}=\frac{2009b+2020c-2021d}{2009c+2020d-2021e}\)
\(\Rightarrow\frac{a^3}{b^3}=\left(\frac{2009b+2020c-2021d}{2009c+2010d-2021e}\right)^3\)
Mà \(\frac{a^3}{b^3}=\frac{a^2}{b^2}.\frac{b}{c}=\frac{a^2}{bc}\)
\(\Rightarrow\left(\frac{2009b+2020c-2021d}{2009c+2010d-2021e}\right)^3=\frac{a^2}{bc}\)