Cách làm:

S= 9000 + ( x - 1 ) .11000 = 9000 + 11000x - 11000 = 11000x - 2000

Đa dạng sinh học (tiếng Anh: biodiversity) được định nghĩa là sự khác nhau giữa các sinh vật sống ở tất cả mọi nơi, bao gồm: các hệ sinh thái trên cạn, sinh thái trong đại dương và các hệ sinh thái thuỷ vực khác, cũng như các phức hệ sinh dục mà các sinh vật là một thành phần trong đó. Thuật ngữ đa dạng sinh học này bao hàm sự khác nhau trong một loài, giữa các loài và giữa các hệ sinh thái khác nhau

- Nơi có lượng mưa dưới 200 mm là môi trường hoang mạc, thực động vật nghèo nàn.

- Lượng mưa từ 200 mm đến 500 mm là môi trường xa van.

- Lượng mưa trên 1000 mm là môi trường xa van và rừng nhiệt đới.

Trong một môi trường trong suốt và đồng tính ánh sáng truyền đi theo đường thẳng

Tham khảo

Among my friends, I cherish the most is Hong. She is a good student of my class, she lived with her mother in a small house near my house. She has short black hair, oval face and brown eyes. What particularly struck me about her was the smile. She looks so lovely when he smiles. She is a form of friends that I can share everything. She always believed and helped me in every situation. She is gentle and endearing all friends. She likes Literacy, reading, listening to music and go under heaven mua. Hong and I have a lot in common with each other, has become good friends over the past 5 years. Although time has passed long in any case, Hong and I also trying to keep this friendship.

Tham khảo nhé

I really want to tell you about my friend, one of my best friend is Tuan. We were classmate during our five years at Da Nang University of Technology. He was a good student of my class. He has black hair and bright eyes and is very good – looking. Tuan and I had many things in common, especially, our hobbies. We both like traveling, billiard, table tennis, reading book and singing.

He has a kind heart and is easy to get on with everybody. The deeper our mutual understanding becomes the more we feel closely attached to each other. We are the best pupils in our class. Tuan is always at the top. He is good at every subject, but he never shows pride in his abilities and always tries to learn harder.

Tuan’s family is not rich. His parents are farmers. He often spends most of his free time doing useful things to help his parents. I like Tuan very much because of his honesty and straight forwardness. He is always ready to help his weak friends in their study; as a result, lots of friends, thanks to his whole-hearted help, have become good ones.

bài nói hay bài viết bạn

1.We not spent our summer holiday in Da Lat last year .

=> didn't spend

2.My brother often has a three-weeks summer vacation

=> three-week

3.Does Nam has less stamps than Viet?

=>fewer

4.Chi usually spends two hours to do her homework every morning

=>doing

5.What were you buy at the souvenir store yesterday?

=>did

Các thành phần chính trên trang tính là: ô , cột, hàng, hộp tên, khối, thanh công thức

Thành phần chính trên trang tính là : ô, cột, hàng , hộp tên, khối, thanh công thức