Vì x và y là 2 đại lượng tỉ lệ nghịch

=> y = \(\dfrac{a}{x}\)

Thay x = 4, y = 9 có:

9 = \(\dfrac{a}{4}\)

=> a = xy = 4.9 = 39

Biểu diễn y theo x:

\(y=\dfrac{36}{x}\)

Công Chúa Giá Băng chúa băng giá sai vào chô 3.2⁴.5 đó

sai rồi

Rewrite the sentences so that their meanings stay the same

1. Emperor Ly Thanh Tong built the Temple of Literature in 1070.

-> The Temple of Literature was built by Emperor Ly Thanh Tong in 1070.

2. I've ever eaten this kind of cake.

-> It's the kind of cake I've ever eaten.

3. My father dislike smoking and her father does, too.

-> My father doesn't like smoking. Her father doesn't like smoking.

4. I send him a postcard last week.

-> He was sent a postcard last week.

5. New York isn't as safe as London.

-> London is safer than New York.

6. Lan is 1.40 meters, and I am 1.35 meters.

-> I'm not as tall as Lan.

7. I find carving egg sells boring.

-> I think carving eggsells is boring.

8. My sister think making pancakes is difficult.

-> My sister finds making pancakes difficult.

9. You should book a room in advance.

-> You'd like to book a room in advance./ It's..................

10. Huong spends more milk in the bottle than in the carton.

-> There isn't any milk in the carton.

11. Hung eats more rice than Nam.

-> Nam eats less rice than Hung.

12.My bike is the same as yours.

-> My bike isn't different from yours.

*Thông cảm >< Có câu ko bik làm :)

|x-5|+4=15

|x-5|=15-4

|x-5|=11

=>x-5=11

    x-5=-11

=>x=11+5=16

    x=-11+5=-6

=> x thuộc{16,-6}

Nêu thành phần của bộ xương

A. Xương đầu

B. Xương thân

C. Xương các chi

D. Cả A, B và C

Chất nào sau đây làm quỳ tím chuyển màu đỏ?

A. C H 3 C O O H .  

B. C H 3 C H 2 O H .  

C. C H 2 = C H 2 .  

D. C H 3 O H .

Read the passage and answer the questions.

Champa is a sun bear. She is 12 years old. Bears usually live in the forest but Champa lives in the bear center at Cat Tien National Park. The bear center has a swimming pool, climbing towers, and comfortable places for Champa to sleep, eat, and play. Some of Champa’s family members live there with her. There are some trees in the bear center and Champa loves to climb to the top of them.

Champa has big teeth but she mainly eats fruit. Champa’s favorite food is mangoes, but she also eats apples, nuts, eggs, and honey. The park keepers bring Champa and her family fruit to eat every day. Sun bears usually sleep during the day and wake up at night. Champa likes the park keepers and wakes up when she hears them bringing food in the evenings.

Question: Where do bears usually live?

__________________________________________________________________

Kế hoạch khôi phục và phát triển kinh tế 5 năm (1946-1950) của nhân dân Liên Xô đã hoàn thành trong thời gian

A. 5 năm.

B. 4 năm 3 tháng.

C. 4 năm 5 tháng.

D. 4 năm 8 tháng.

Đặt tính rồi tính

12198 x 4