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14 tháng 2 2020

Bằng 1 nha 

bằng 9 vì :

Nếu như theo những gì ta được học trong trường thì kết quả sẽ là 9, theo nguyên tắc là phép tính trong ngoặc thực hiện trước 2 + 1 = 3. Sau đó, nếu dãy phép tính chỉ gồm phép trừ và phép cộng hoặc phép nhân và phép chia thì phải thực hiện từ trái sang phải. Như vậy, theo thứ tự là 6 : 2 x 3 = 3 x 3 = 9. Đây là cách tính phổ biến trên toàn thế giới và là kết quả chính xác nhất “ngày nay".

Vì sao lại là “ngày nay"? Tranh cãi xảy ra vì một số người sử dụng một quy tắc tính cổ, phổ biến từ trước 1917, đó là khi sử dụng phép tính chia, thì được hiểu rằng số chia là toàn bộ các thành phần nằm bên phải kí hiệu. Ví dụ: x : 2y nếu tính theo quy tắc này sẽ là x : (2y). Như vậy, kết quả của phép tính trên sẽ là 1.

19 tháng 11 2018

=96

mk làm đúng chứ???

#G2k6#

19 tháng 11 2018

= 40

* Đúng không vậy ? *

22 tháng 6 2018

Chuyển sang câu passive

1. What material do you use to make a cake ?

-> What material is used to make a cake?

2. I saw him passing the street

-> He was seen passing the street by me.

3. I saw him pass the street

-> He was seen to pass the street by me.

4. What makes you sad ?

-> By what are you made sad?

5. Who makes you sad ?

-> By whom are you made sad?

6. Who can help us do this test ?

-> By whom can we be helped do this test?

7. Someone broke into ourr house then stole everything

-> Our house was broken into then everything was stolen.

8. We can't solve this problem cigarette

-> This problem cigarette can't be solved.

9. What can we do to help our mum ?

-> What can be done to help our mum?

10. Who can help us ?

-> Whom can we be helped by?

22 tháng 6 2018

Chuyển sang câu passive

1. What material do you use to make a cake ?

=> What material is a cake used?

2. I saw him passing the street

=> He was seen by me while passing the street

3. I saw him pass the street (passed chứ ạ?)

=> He was seen by me that he had passed the street

4. What makes you sad ?

=> What is your sadness made?

5. Who makes you sad ?

=> Who is your sadness made?

6. Who can help us do this test ? (to do)

=> Who can this test be done to help us?

7. Someone broke into ourr house then stole everything

=> Our house was broken and then was stolen everything (by someone )

8. We can't solve this problem cigarette

=> This problem cigarette can't be solved by us

9. What can we do to help our mum ?

=> What can our mum be helped by us?

10. Who can help us ?

=> Who can us be helped?

22 tháng 6 2020

Take it easy:

2 X 2 = 42 with 4 = 2 X 2 and 2 = 2 X 2 - 2

2 X 4 = 86 with 8 = 2 X 4 and 6 = 2 X 4 - 2

6 X 3 = 1812 with 18 = 6 X 3 and 12 = 6 X 3 - 6

...

So 7 X 2 = 147 with 14 = 7 X 2 and 7 = 7 X 2 - 7

22 tháng 6 2020

7 X 2 = 14

22 tháng 5 2020

dùng cấu trúc : Do/would you mind + (not) + doing sth hoặc Would/Do you mind if... ? để viết lại các câu sau cho lịch sự hơn :

1. Please don't smoke

Do/Would you mind not smoking ?

2.can I turn on the tv

Do you mind if I turn on the TV? / Would you mind if I turned on the TV?

3.will you help me carry this box upstairs ?

Do/Would you mind helping me carry this box upstairs ?

4. can you solve this math problem for me ?

Do/Would you mind solving this math problem for me ?

5. can i use your personal computer for some minutes ?

Do you mind if I use your personal computer for some minutes? / Would you mind if I used your personal computer for some minutes?

6.can you show me how to operate this machine ?

Do/Would you mind showing me how to operate this machine ?

7.can i ask you some questions about your family ?

Do you mind if I ask you some questions about your family? / Would you mind if I asked you some questions about your family?

8. May i take a photo of your new house?

Do you mind if I take a photo of your new house? / Would you mind if I took a photo of your new house?

9. will you please take me around the town?

Do/Would you mind taking me around the town ?

10.can i borrow your english dictionary ?

Do you mind if I borrow your English dictionary? / Would you mind if I borrowed your english dictionary?

21 tháng 8 2021

1 can't => couldn't

2 what => whether

3 happy => unhappy (đề sai chính tả many => may)

4 happen => happens

5 staying => to stay

6 easy => easily

7 cleanly => clean

8 well => good

9 interesting => interesting

10 biger => bigger

22 tháng 8 2021

câu 4: happen sửa lại thì ko phải happens đâu, mà là happening đấy

Exercise 1: use both do/would you mind + v-ing and do/would you mind if i......? to make the following requests more polite. 1. Can i turn on the TV. ............................................... 2. Can you correct this composition for me ? .............................................. 3. Can i take a photo of your study corner? ......................................... 4. Can i give some advice on your study habits? ......................................... 5. Can you play the tape...
Đọc tiếp

Exercise 1: use both do/would you mind + v-ing and do/would you mind if i......? to make the following requests more polite.

1. Can i turn on the TV.

...............................................

2. Can you correct this composition for me ?

..............................................

3. Can i take a photo of your study corner?

.........................................

4. Can i give some advice on your study habits?

.........................................

5. Can you play the tape once more?

..........................................

6. Can i borrow your dictionary?

............................................

7. Could i have a look at your homework.

..........................................

8. Could you tell me how you learned English at school?

..................................................

9. Can i use your computer for one hour?

...............................................

10. Could you solve this math problem for me?

................................................

1
21 tháng 6 2020

Exercise 1: use both do/would you mind + v-ing and do/would you mind if i......? to make the following requests more polite.

1. Can i turn on the TV.

Would you mind if I turned on the TV?

2. Can you correct this composition for me ?

Would you mind correcting this composition for me?

3. Can i take a photo of your study corner?

Would you mind if i took a photo of your study corner?

4. Can i give some advice on your study habits?

Would you mind if i gave some advice on your study habits?

5. Can you play the tape once more?

Would you mind playing the tape once more?

6. Can i borrow your dictionary?

Would you mind if i borrowed your dictionary?

7. Could i have a look at your homework.

Would you mind if i had a look at your homework?

8. Could you tell me how you learned English at school?

Would you mind telling me how you learned English at school?

9. Can i use your computer for one hour?

Would you mind if i used your computer for one hour?

10. Could you solve this math problem for me?

Would you mind solving this math problem for me?

28 tháng 6 2019

\(=\frac{21.273.1333.4161.10101}{91.651.2451.6643.14763}\)

\(=\frac{3.7.13.21.31.43.73.57.91.111}{7.13.21.31.43.57.73.91.111.133}=\frac{3}{133}\)

Tuy nhiên cách làm trên phải có máy tính mới làm đc: 

Có thể sử dụng công thức:

\(x^4+x^2+1=\left(x^2+x+1\right)\left(x^2-x+1\right)\)

Sau đó phân h:

\(2^4+2^2+1=\left(2^2+2+1\right)\left(2^2-2+1\right)=7.3\)

\(4^4+4^2+1=\left(4^2+4+1\right)\left(4^2-4+1\right)=21.13\)

....Tiếp tực làm thì sẽ ra đc kết quả:

\(=\frac{3.7.13.21.31.43.73.57.91.111}{7.13.21.31.43.57.73.91.111.133}=\frac{3}{133}\)

24 tháng 1 2017

6 : ( 1 + 2 ) . 2

= 6 : 3 . 2

= 2 . 2

= 4

24 tháng 1 2017

6 : (1 + 2) x 2

= 6 : 3 x 2

= 2 x 2

= 4

Bằng 4

mik nah nhất đó

5 tháng 1 2019

wow, it's so hard, i am caculating it

X= -20,384

5 tháng 1 2019

thank you very much