2. There isn't any rice in the bag.

3. I don't like coffee and tea.

4. We need healthy food and drinks.

5. We usually have vegetables and fish for lunch.

6. We often go to a restaurant on Friday evening.

7. We always go to France in spring.

8. It never rains in Britain.

9. People usually get up late on Sunday.

10. Which sports does your father play?

11. I sometimes listen to music at night.

2. There isn't any rice in the bag.
3. I don't like coffee and tea.
4. We need healthy food and drinks.
5. We usually have fish and vegetables for lunch.
6. We often go to a restaurant on Friday evening.
7. We always go to France in spring.
8. It never rains in Britain.
9. People usually get up late on Sunday.
10. Which sports does your father play?
11. I sometimes listen to music at night.

Bấm máy tính đi bạn :))

ko đăng được

Copy r dán 

copy rồi dán

Gọi số phần chia lần lượt là a,b,c

Áp dụng tính chất của tỉ số = nhau là:

\(\frac{a}{2}=\frac{b}{3}=\frac{c}{4}=\frac{a+b+c}{2+3+4}=\frac{135}{9}=15\)

=> a = 2 . 15 = 30

     b = 3 . 15 = 45

     c = 4 . 15 = 60

Tự kl nhé :)

Gọi : a,b,c lần lượt là 3 phần

Mà 3 phần tỉ lệ với 2;3;4

\(\Rightarrow\frac{a}{2}=\frac{b}{3}=\frac{c}{4}\)và\(a+b+c=135\)

ÁTCDTSBN ta có:

\(\frac{a}{2}=\frac{b}{3}=\frac{c}{4}=\frac{a+b+c}{2+3+4}=\frac{135}{9}=15\)

\(\Rightarrow\hept{\begin{cases}a=15.2=30\\b=15.3=45\\c=15.4=60\end{cases}}\)

a,

\(HCl+AgNO_3\rightarrow AgCl+HNO_3\)

b,

\(H_2SO_4+BaCl_2\rightarrow BaSO_4+2HCl\)

câu này mink có nge qua đố vui nhưng ko nhớ là nghe ở đâu và ko nhớ đáp số . xin lỗi bn nha

chong 3 cai len nhau cat doi ra la co 6 mieng roi nguoi cat an 1 mieng