Cái kéo tiếng anh là scissors

scissors

Chọn đáp án A

1+44444000009959586898868

a44444000009959586898869 b44444000009956585859867

c44444000009954565788869 d44444000009956575453468

4030 / 2016 = 2015/ 1008 =

cảm ơn

\(\left|x+2023y\right|>=0\forall x,y\)

\(\left(y+1\right)^{2024}>=0\forall y\)

Do đó: \(\left|x+2023y\right|+\left(y+1\right)^{2024}>=0\forall x,y\)

Dấu '=' xảy ra khi \(\left\{{}\begin{matrix}x+2023y=0\\y+1=0\end{matrix}\right.\)

=>\(\left\{{}\begin{matrix}y=-1\\x=-2023y=-2023\cdot\left(-1\right)=2023\end{matrix}\right.\)

23 x 19 + 46 x 2 - 23 x 5

= 23 x 19 + 23 x 2 x 2 - 23 x 5

= 23 x (19 + 2 x 2 - 5)

= 23 x (19 + 4 - 5)

= 23 x (23 - 5)

= 23 x 18

= 414

Ta có: \(23\times19+46\times2-23\times5\)

\(=23\times19+23\times4-23\times5\)

\(=23\times\left(19+4-5\right)=23\times18=414\)

1. B

2. B

3. B

4. A

5. B

6. A

1 B

2 B

3 B

4 A

5 B

6 A

1 - You must not park here
2 - May I use your phone
3 - You must finish your homework
4 - You should exercise regularly
5 - She does not have to come to the meeting
6 - You must not touch the exhibits
7 - Students must wear a uniform
8 - We do not have to stay late
9 - You should not eat junk food every day
10 - You must carry an ID card
11 - He must be at the airport by 7 AM
12 - She can dance very well
13 - You should review your notes before the exam
14 - You must not smoke in the library
15 - May I borrow your book
16 - They cannot do this difficult exercise
17 - You should not spend too much time playing video games
18 - You must fasten your seatbelt while driving
19 - May I take your car in the afternoon today
20 - You must not park your car here

1. It's against the rules to park here.

- You .....mustn't park here............

2. Is it OK if I use your phone?

- .......Can I use your phone?.......................

3. It's necessary for you to finish your homework.

- You .......need to finish your homework................

4. It's a good idea to exercise regularly.

- You ...should exercise regularly..........................

5. It's not necessary for her to come to the meeting.

- She .doesn't have to come to the meeting......................................

6. It's forbidden to touch the exhibits.

- You mustn't touch the exhibits ........................................

7. It's the rule to wear a uniform.

- Students ......must wear a uniform..............................

8. It's not necessary for us to stay late

- We don't have to stay late......................

9. It's a bad idea to eat junk food every day.

- You ....shouldn't eat junk food every day.......................

10. It's the rule to carry an ID card.

- You ......must carry an ID card..............................

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