I have known him since we were primary students.

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TV Cuber
3 phút trước

Kho 1 chứa số tấn gạo là

`121/(3+8) xx 3 = 33 (tấn)`

Kho 2 chứa số tấn gạo là

`121 - 33 = 88(tấn)`

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Kho 1 chưas 121x3/11=33(tấn)

Kho 2 chứa 121-33=88(tấn)

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Han Gia

\(\dfrac{1}{2^2}< \dfrac{1}{1\cdot2}\\ \dfrac{1}{3^2}< \dfrac{1}{2\cdot3}\\ \dfrac{1}{4^2}< \dfrac{1}{3\cdot4}\\ ...\\ \dfrac{1}{50^2}< \dfrac{1}{49\cdot50}\\ \Rightarrow A=\dfrac{1}{1^2}+\dfrac{1}{2^2}+\dfrac{1}{3^2}+\dfrac{1}{4^2}+...+\dfrac{1}{50^2}< 1+\dfrac{1}{1\cdot2}+\dfrac{1}{2\cdot3}+\dfrac{1}{3\cdot4}+...+\dfrac{1}{49\cdot50}\\ \Rightarrow A< 1+1-\dfrac{1}{2}+\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{4}+...+\dfrac{1}{49}-\dfrac{1}{50}\\ \Rightarrow A< 2-\dfrac{1}{50}< 2\)

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Lê Michael
21 phút trước

`41 - (2.x - 5) = 3^2`

`41 - (2.x - 5) = 9`

`2.x-5=41-9`

`2.x-5=32`

`2.x=32+5`

`2.x=37`

`x=37:2`

`x=18,5`

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Tuệ Lâm Đỗ
21 phút trước

\(41-\left(2x-5\right)=3^2=9\)

=> 2x - 5 = 41 - 9 = 32

=> 2x = 32 + 5 = 37

=> x = 37/2

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TV Cuber
20 phút trước

`41-(2x -5) = 3^2`

`<=> 2x-5 = 41 -3^2 =41-9`

`<=> 2x-5 =32`

`<=> 2x = 32+5=37`

`=> x=37/2`

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Khinh Yên
32 phút trước

VI . Rewrite the following sentences without changing their original meanings.
-> Your father _____should not drink so much wine_____________________________________

6 . Getting up early every day is good for your health

 

-> You ___________you get up early every day_____________________________
9 . It's good for you to take exercise every day.
-> You ___________should take exercise every day_____________________________
10 . It's very important not to drink the water there. It will make you ill
-> You ____________should not drink the water there because it will make you ill____________________________

 

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Lê Michael
40 phút trước

`2^3 + 2 . { 12 + 2 . [ 3 xx ( 5 - 2) + 1]} + 1`

`=2^3 + 2 . { 12 + 2 . [ 3 xx 3 + 1]} + 1`

`=2^3 + 2 . { 12 + 2 . [ 9 + 1 ]} + 1`

`=2^3 + 2 . { 12 + 2 . 10 +1}`

`=2^3 + 2 . { 12 + 20 + 1}`

` = 2^3 + 2 . 33`

`=8 + 2 . 33`

`= 8 + 66`

`= 74`

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Lê Michael
42 phút trước

`12/19 . 7/15 . (-13)/17 . 19/12 . 17/13`

`=(12/19 . 19/12) . ( (-13)/17 . 17/13) . 7/15`

`= 1 . (-1) . 7/15`

`= -1 . 7/15`

`=-7/15`

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Phạm Hà
42 phút trước

helpppp meeee plssss !!!

 

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TV Cuber
18 phút trước

`12/19 * 7/15 * (-13)/17 * 19/12 * 17/13`

`= (12/19 * 19/12)* ( (-13)/17 * 17/13) * 7/15`

`=1* (-1)* 7/15`

` = (-1) * 7/15 = -7/15`

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