b và c

B và D

1. B

2. D

1 doesn't like

2 was reconstructed

3 have ever tried

4 will you take

5 is made

6 often rains - isn't raining

7 had

8 are standing

9 are

1. doesn't like

2. was reconstructed

3. I have ever tried

4. will you take

5. is made

6. often rains - isn't raining

7. had

8. are standing

9. are

1 I have known her for a long time

2 They have bought a new house since April

3 My family have been here since Christmas

4 We haven't seen each other for 10 years

5 How long have you ever visited Ha Long Bay?

6 I have written a letter for 2 hours

Bài 2:

\(a.\left(y+3,02\right):1,5=6,9\times0,3.\\ \Leftrightarrow\left(y+3,02\right):1,5=2,07.\\ \Leftrightarrow y+3,02=3,105.\\ \Leftrightarrow y=0,085.\)

\(b.16,15:\left(y\times19\right)=17.\\ \Leftrightarrow y\times19=0,95.\\ \Leftrightarrow y=0,05.\)

\(c.0,5\times y:5=10\times0,2.\\ \Leftrightarrow0,5\times y:5=2.\\ \Leftrightarrow0,5\times y=10.\\ \Leftrightarrow y=20.\)

bài đâu

tui hong giúp zì cả ý:))

đề j kì vậy

TĐC với tế bào.

bài đây hả?

Bài 2:

a: Xét ΔAMN và ΔAMP có

AM chung

MN=MP

AN=AP

Do đó: ΔAMN=ΔAMP