Giải thích tại sao không nên thường xuyên đi giày cao gót?

Ai giúp mình làm bài này với khó quá

$\frac{a+b+c}{2}$ ≤ $\frac{a^3}{b^2+c^2}$+ $\frac{b^3}{c^2+a^2}$ + $\frac{c^3}{a^2+b^2}$

các bác giải giùm em bài này ạ, chi tiết cả bài nha, em cần gấp

VII. Complete the sentences with the correct verb form. 1. John adores (play) badminton in the winter 2. My father sometimes goes (hunt) in the forests. He’d like to find some more food for our family. 3. The boy (pick) up a stone and threw it in to the river. 4. He (collect) stamps from many countries since he (be) eight. 5. Which sports do you like (play)? 6. Hoa’s teacher wants her (spend) more time on math. 7. I promise I (try) my best next semester. 8. Sandra needs (improve) her English writing. 9. You should (underline) the word you want (learn) . 10. Can you help me (move) this table? 11. Nam always (get) grade A in Physics, but last semester he (get) B. 12. They were proud of (be) so successful. VIII. Fill in each blank with the appropriate form of the word in brackets. 1. There is a of books on the shelf. (collect) 2. It is very for people in remote areas to get to hospitals. (convenience) 3. He is very with his hands. (skill) 4. It is said that water collected from the local streams is to drink. (safe) 5. We want relations with all countries. (friend) 6. I like to eat , so I eat a lot of fruits and vegetables every day. (health)

giải thích tại sao 276 độ +x =360 độ mà ko phải là 176 độ +x=360 độ

Giúp mik vs các bạn , nhanh nhé mik cần gấp lắm . Sử dụng hệ thức 1 hoặc 2 thôi nhé

vẽ đậu mầm đeo kính ngầu NL: Hưng Yên sắp đi hok lại rồi:>

bài kỹ thuật tách số nha. trình bày đầy đủ, chính xác giúp mình -10$x^{2}$ + 7x + 12

Exercise 6. Complete the second sentence so that it has the same meaning as the first one. 1. Her old house is bigger than her new one. => Her new house……………………………………......... 2. No one in my class is taller than Peter. => Peter ………………………………………………. 3. The black dress is more expensive than the white one. => The white dress …………………………………………… 4. According to me, English is easier than Maths. => According to me, Maths …………………………………. 5. No one in my group is more intelligent than Mary. => Mary ………………………………………………………. 6. No river in the world is longer than the Nile => The Nile ………………………………………………….. 7. Mount Everest is the highest mountain in the world. => No mountain ……………………………………………... 8. This is the first time I have ever met such a pretty girl. => She is …………………………………………………….. 9. He works much. He feels tired. => The more ………………………………………………… 10. This computer works better than that one. => That computer ……………………………………………..