hình như là:

B= 0,(12).9+0,(90)

B= \(\frac{12}{9}\).9+\(\frac{90}{9}\)

B= 12+10

B= 32

tính à bạn?

4 con mèo 

tick đúng cho mình nha

mk đăng kí nhá !!!

Tên: Dương Yến Chinh

Lớp: 7B

Link: Dương Yến Chinh

a) Đổi 4m=40dm

Diện tích HCN là

40.30=1200dm²

b)Đổi 40cm=4dm

Diện tích mỗi viên gạch là

4.4=16dm²

Cần số viên gạch là

1200:16=75(viên)

1. I like English best of all subject.

-> My favorite subject is English.

2. We have a break that last thirty minutes.

-> We have a thirty-minutes break.

3. Hoa always gets 10 marks in English.

-> Hoa is good at English.

4. We will have a vacation that last for two months.

-> We have a two-month vacation.

5. It's necessary for students to review their lessons.

-> Students need to review their lessons.

6. My grandmother shouldn't eat too much meat.

-> My grandmother should eat less meat.

7. My classes last from seven to eleven fifteen.

-> My classes start from seven o'clock to a quarter past eleven.

8. Lan learns Math well.

-> Lan is good at Math.