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Trần Mai Phương
07/08/2019 at 15:20
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các bạn giúp mik nha

I. Rewrite the sentences below so that it has a similar meaning to the first, beginning with the words given

1. I find his handwriting very hard to read

-> I have....................

2. He got down to writing a letter as soon as he returned from his work

-> No sooner.................................

3. "If I were you, I wouldn't accept his marriage proposal", said Nam to Lan

-> Nam................

4. No matter how hard I tried, I could not open the window

-> Try.......................

5. Please don't ask me that question

-> I'd rather.............

II. Finish the second sentence so that it has the same meaning as the first one, using the given words. Do not change the given word

1. The fridge is complete empty (LEFT)

-> 

2. It is pointless to have that old typewriter repaired (WORTH)

->

3. Frank never pays any attention to my advice. (NOTICE)

-> 

4. John only understood very little of what the teacher said (HARDLY_

->

5. Her ability to run a company really impresses me (IMPRESSED)

->


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Phạm Thanh Trúc
31/07/2019 at 01:46
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2
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Đố vui:

Vừa bằng hạt đỗ, ăn giỗ cả làng

Là con gì?hihi

  • ...
    Sarah Marianna 01/08/2019 at 04:40

    Câu hỏi : Vừa bằng hạt đỗ , ăn giỗ cả làng . Là con gì ?

    Câu trả lời : Là con ruồi .

  • ...
    Kinnen 19/11/2019 at 12:10

    Là con ruồi , nhé bạnbanh


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Trần Bảo Nam
28/07/2019 at 23:40
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2
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Đơn vị đo độ dài nào lớn nhất trong các đo độ dài sau?

a.Pasếc           b.Năm ánh sáng

c.Km               d.Đơn vị thiên văn

  • ...
    Trần Bảo Nam 28/07/2019 at 23:40

    Pa sếchihi

  • ...
    Thùy Dương Tạ 19/11/2019 at 12:03

    a . Pasếc 

    okNhé bạn .


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WilldaBeast
10/07/2019 at 15:07
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Prove that the following equation has no positive integer solution :

\(4xyz-x-y=t^2\)   


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William1
07/07/2019 at 11:10
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For a ; b ; c is a non-negative real number: a + b + c = 3. Prove that : \(\left(3abc+1\right)\left(a^2b+b^2c+c^2a\right)\ge12abc\)

  • ...
    William1 24/08/2019 at 13:16

    hehe boi , can u solve ? ha


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Quy Nguyen
02/07/2019 at 08:32
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NGƯỜI TA GIẢM CHIỀU RỘNG MẢNH ĐẤY HÌNH CHỮ NHẬT 8M ĐƯỢC MỘT MẢNH ĐẤT HÌNH CHỮ NHẬT MỚI SAU ĐÓ TĂNG CHÌỀN DÀI THÊM 8M . TÍNH DIỆN TÍCH MẢNH ĐẤT SAU KHI THAY ĐỔI CHIỀU DÀÌ VÀ CHIỀU RỘNG BIẾT RẰNG PHẦN ĐẤT HÌNH CHỮ NHẬT BỊ CẮT ĐI GẤP ĐÔI DIỆN TÍCH HÌNH CHỮ NHẬT ĐƯỢC THÊM VÀO.

 

  • ...
    Quy Nguyen 02/07/2019 at 08:37

    help me 

  • ...
    Trần Bảo Nam 28/07/2019 at 23:37

    It's too hard


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bách lài
22/06/2019 at 13:17
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1/3 của 18

hello An

  • ...
    Trần Bảo Nam 28/07/2019 at 12:38

    \(18:\dfrac{1}{3}=6\)

  • ...
    lê đức anh 09/01/2020 at 12:55

    18x1/3=6

  • ...
    Vu Minh Anh 29/10/2019 at 12:10

    1/3 của 18 = 18/3=6


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Nguyễn Hoàng An
22/06/2019 at 08:20
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10+3x3

2+7x2 

           Hi zero

  • ...
    Nguyen Duy Anh 24/06/2019 at 13:41

    10+3*3=19

    2+7*2=16

    Nguyễn Hoàng An selected this answer.
  • ...
    Dương Ngọc Thiện 16/03/2020 at 01:02

    10 + 3 x 3

    = 10 + 9 

    =  19

    2 + 7 x 2

    = 2 + 14

    = 16


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Uchiha Sasuke
14/06/2019 at 02:09
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Given two function \(f\left(x\right)=\sqrt{25x^2-30x+9}\), \(g\left(y\right)=y\). How many values of a are there such that \(f\left(a\right)=g\left(a\right)+7\)?

function

  • ...
    Nguyễn Linh Chi 08/08/2019 at 09:44

                   \(f\left(a\right)=\sqrt{25a^2-30a+9}\)

                   \(g\left(a\right)=a\)

    We have the following:

            \(f\left(a\right)=g\left(a\right)+7\)

    \(\Leftrightarrow\sqrt{25a^2-30a+9}=a+7\)

    \(\Leftrightarrow\left\{{}\begin{matrix}25a^2-30a+9=\left(a+7\right)^2\\a+7\ge0\end{matrix}\right.\)

    \(\Leftrightarrow\left\{{}\begin{matrix}a\ge-7\\24a^2-44a-40=0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}a\ge-7\\\left[{}\begin{matrix}a=\dfrac{5}{2}\\a=-\dfrac{2}{3}\end{matrix}\right.\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}a=\dfrac{5}{2}\\a=-\dfrac{2}{3}\end{matrix}\right.\)

    Finally, there are two values of a.

    Uchiha Sasuke selected this answer.

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Uchiha Sasuke
14/06/2019 at 02:06
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Find all positive integer values of n such that \(\dfrac{n-17}{n+23}\) is a square of a quotient number.

integers

  • ...
    Lux Arcadia 14/06/2019 at 14:20

    \(\dfrac{n-17}{n+23}=\dfrac{n+23-40}{n+23}=1-\dfrac{40}{n+23}\)

    \(\Rightarrow\left\{{}\begin{matrix}40⋮\left(n+23\right)\\n+23\ge23\left(n\ge0\right)\end{matrix}\right.\)

    \(\Leftrightarrow\left\{{}\begin{matrix}\left(n+23\right)\in\left\{1;2;4;5;8;10;20;40\right\}\\n+23\ge23\end{matrix}\right.\)

    \(\Leftrightarrow n+23=40\Leftrightarrow n=17\)


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