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      <title>Padlet thanh nhã của tôi by Tín Ngô</title>
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      <pubDate>2023-11-15 22:34:56 UTC</pubDate>
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         <pubDate>2023-11-16 15:18:31 UTC</pubDate>
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         <link>https://padlet.com/tinhihi306_/xqelcgq8beovtz7i/wish/2792695127</link>
         <description><![CDATA[<p>Minh Huy 11T1</p>]]></description>
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         <pubDate>2023-11-16 16:12:04 UTC</pubDate>
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         <description><![CDATA[<p>Xét tam giác EFC có</p><p>Ta có x+30=50=&gt;x=20</p><p>Xét tam giác DEF có:</p><p>E=D=(180-50)/2=65</p><p>Lại có AED=EDF (slt)</p><p>=&gt; y=65</p><p>Vậy x+y=85</p><p>(Quang Minh 11T1)(ban dịch thuật)</p>]]></description>
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         <pubDate>2023-11-20 06:39:25 UTC</pubDate>
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         <link>https://padlet.com/tinhihi306_/xqelcgq8beovtz7i/wish/2796293895</link>
         <description><![CDATA[<p><br>Biết mép đường cong là cung một phần tư đường tròn có bán kính <br>3 cm và hai mặt cắt được tô màu đậm đều là hình chữ nhật. Thể tích chi tiết máy đó tính theo đơn vị cm khối bằng</p><p>Giải: Diện tích mặt trước: (8*8- pi*9)/4 = 8,93</p><p>=&gt; thể tích = 8.93*1,5 = 13,4</p><p><br></p>]]></description>
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         <pubDate>2023-11-20 11:45:09 UTC</pubDate>
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         <link>https://padlet.com/tinhihi306_/xqelcgq8beovtz7i/wish/2796306115</link>
         <description><![CDATA[<p>Cho hình chóp S.ABC có thể tích bằng V. Gọi M, N, P lần lượt là trung điểm của các cạnh BC, CA, AB. Thể tích khối chóp S.MNP.</p><p>Giải: vì S(MNP) = S(ABC)/4 =&gt;V (S.MNP) =V/4</p>]]></description>
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         <pubDate>2023-11-20 11:56:55 UTC</pubDate>
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         <description><![CDATA[<p>Viết phương trình đường thẳng (d) qua A(2;3;1) cắt đường thẳng (d1): (x-2)/3=y+3=(z+1)/2 và vuông góc với đường thẳng (d2): x=t-2; y=4-2t; z=3-t (t ∈ R).</p><p>Giải: gọi M( 3u+2;u-3;2u-1) ∈ (d1)</p><p>=&gt; AM→=(3u;u-6;2u-2)</p><p>mà AM→ ⊥ u→(d2) =&gt; 3u-2(u-6)-(2u-2)=0 =&gt;tu14</p><p>=&gt; AM→=(3u;u-6;2u-2) = (42;8;26)</p><p>=&gt;(d1) = (x-2)/21=(y-3)/4=(z-1)/13</p>]]></description>
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         <title>đáp án A</title>
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         <pubDate>2023-11-21 14:46:09 UTC</pubDate>
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         <title>đáp án C</title>
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         <title>Đoàn Thảo 12T1</title>
         <author>patricawina</author>
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         <pubDate>2023-11-25 08:37:55 UTC</pubDate>
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         <title>Đoàn Thảo 12T1</title>
         <author>patricawina</author>
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