Chứng minh rằng: $(x+y+z)^{3}$= $x^{3}$+ $y^{3}$+ $z^{3}$+$3(x+y)$$(y+z)(z+x)$

Điền từ:melted, thousands, and ,away, moderate, cold Islands can form in a lot of different ways. Some islands formed a long time ago. About 20,000 years ago, Earth was very, very (1) _____. Lots of water from the ocean froze into ice, (2) _____ the sea level went down everywhere. Later,Earth became warmer and a lot of the ice (3) _____, and the sea level went up. Places that were valleys and mountains 20,000 years ago became seas and islands. Sometimes, land can move (4) _____ from the mainland to form an island.It takes (5) _____ of years for islands to form in this way.

Cho a,b,c $\rm\ge$ 0 và ab+bc+ac=1 .Chứng minh a+b+c+3abc $\rm\ge$ 2

Giúp ạaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Dựa vào số liệu ở bảng bên, hãy vẽ đường biểu diễn mối quan hệ giữa I và U , nhận xét xem nó có phải là đường thẳng đi qua gốc toạ độ hay không?

mình cần dạy gấp bài toán này trong tổng số tin nhắn bầu chọn ca sĩ mình yêu thích dành cho ca sĩ Minh Nhí có 3/5 số người gửi 1 tin nhắn có 3/10 số người gửi hai tin nhắn còn lại Đa số người thứ ba thì nhắn trở lên tìm phân số chỉ số người gửi từ bài tin nhắn trở lên tích hai lớp 5 tập 1

Giúp em 2 câu này với ạ em cảm ơn mọi người em sẽ đánh giá 5 sao ạ

Ex2: Choose the best answer 1. Every day I spend two hours ___________ English. A. practise B to practise C. practising D. practised 2. The skiers would rather __________ through the mountains than go by bus. A.to travel by trainB. travel by train C. traveled by train D. traveling by train 3. He likes ___ part in sports, so he joins the football team of the school. A. to take B. to taking C. takes D. took 4. I don't remember___________ the front door when I left home. A. to lock B. lock C. locked D. locking 5. Children enjoy ___________ to ghost stories on Halloween night. A. telling and listening B. tell and listen C. to tell and listen D. to tell and to listen 6. They decided ___________ to Japan for their summer holiday. A. going B. to go C. go D. to going 7. His parents think it's time for him___________ married. A. gets B. get C. to get D. got 8. Peter's father ordered __________ not to stay out late again. A. him B. to him C. he D. for him 9. Smoking is bad for your heath. You had better_________ it up. A. to give B. give C. giving D. to be giving 10. I hope you don't mind __________ so late at night. A. telephoning B. to telephone C. telephone D.to have telephoned 11. It took three and a half hours _________ to Singapore. A. to fly B. flying C. to be flown D. fly 12. She refused ___________ them. A. to help B. help C. having helped D. helping cần gấp ạ

Trùng giày di chuyển, lấy thức ă, tiêu hoá và thải bã như thế nào?

Ai giúp mik ko thế huhuuhuhu......mik để lớp 8 chứ hình như đây lớp 9 Question 1. Rewrite each of the following sentences so that it means exactly the same as the given one. Using the given word in brackets. Do not change the word. (2.0points) 1.This is the fastest way to get to the city center. There …………………….............................................…………………………....... 2. Do you have to bring that heavy suitcase with you? Is it really ..................................................................................................................... 3. “Don’t forget to send your parents my regards”, she said to me. She told......................................................................................................................... 4. She is proud of being such a good cook. She prides……………………………………………………....................................... 5. The water was so cold that the children couldn’t swim in it. The water wasn’t........................................................................................................... 6. “If I were you, I would never smoke in the office, David.” I advised ....................................................................................................................... 7. If anyone succeeds in solving the problems, it will probably be him. He is the most …………................……...........................…....................................... 8. They made him wait for two hours. He was ......................................................................................................................... 9. Please don’t make me annoyed by such silly questions. I’d rather ....................................................................................................................... 10. When he is asked about his past, he hates it He hates ........................................................................................................................ Question 2: Use the following sets of words or phrases to write complete sentences(1.0pt) 1. Astronomy /study/ universe/and /objects/ in/like /the Moon /the Sun. 2.Beyond 2030 /be /forum/ allow/ students/ share/ / vision of the future. 3. The boy /managed/ deal/ his peers / the vocational school 4. We /have/ same /goal/ seeing/ school students learn more/ real life 5. The crew/ the spacecraft/ spend/ their day/ do/ science experiments