Cho biết x và y là hai đại lượng tỉ lệ nghịch. Khi x = 7 thì y = 4. Tìm y khi x = 5

A. y = 5,6

B. y = 6,5

C. y = 3/28

D. y = 20/7

My name is Mai. I get up very early in the morning. I do morning exercise with my father. After breakfast, my brother and I ride a bicycle to school. We come home at 11 o’clock and then I have lunch with my family. In the afternoon, I study with my partner. Her name is Linh. Sometimes, I go to the library to look for some information. My family go to the cinema once a month.

Who does she go to school with?

My name is Mai. I get up very early in the morning. I do morning exercise with my father. After breakfast, my brother and I ride a bicycle to school. We come home at 11 o’clock and then I have lunch with my family. In the afternoon, I study with my partner. Her name is Linh. Sometimes, I go to the library to look for some information. My family go to the cinema once a month.

Does she get up late in the morning?

Đặt tính rồi tính 

41 326 + 29 548          56 695 – 24 968             12 309 x 7             36 730 : 5

Cứ 100kg thóc thì cho 60kg gạo. Hỏi 2 tấn thóc thì cho bao nhiêu kilogam gạo?

A. 200 kg

B. 12 kg

C. 120 kg

D. 1200 kg

Cho hai số thực a, b tùy ý. Mệnh đề nào sau đây là đúng?

A.  a + b = a + b

B.  a + b ≤ a + b

C.  a + b < a + b

D.  a + b > a + b