Cho 2 đường thẳng d1 và d2 lần lượt có phương trình d1:x+y=1 và d2:x-3y+3=0. Hãy viết phương trình đường d đối xứng với d2 qua đường thẳng d1.

(-113) ×36 ±45 ×(-113) ±(113) ×19 (-12) ×(13) ±13 ×(-22) tim x (-3 ×x)=12 7x-(-14)=21 -3 ×(x-2) ³=81

We are impressed by his...............to help us with the hard mission. A.will B.willing C.willingness D.willingly giúp với ạ

America is known as the land of opportunity. Thousands of people immigrate to the United States every year from different parts of the world to have access to these kinds of opportunities. This is what is known as "the American dream". One of the many reasons America is such a great country is the diversity you see all around. America is one big melting pot of citizens from different backgrounds. America is also home to many of the world's top colleges and universities. The California Institute of Technology is a top world-ranked college that focuses highly on science and engineering. It is located in the city of Pasadena. Harvard University is another top world-ranked college that you might be familiar with. The buildings at Harvard date all the way back to the year 1636, making Harvard the oldest university in the United States. It is located in the state of Massachusetts. University of California, Los Angeles, is another institute worthy of recognition. Located next to Hollywood, UCLA has distinguished itself as a prestigious and selective university due to the number of people who apply for admission throughout the United States. The universities mentioned are but a few of the many other excellent schools that make the United States so outstanding. 1.America is called the land of………… A. dream B. opportunity C. immigration 2. The word immigration in line 1 can be replaced by….. A. come into B. go out of C. travel 3. The California Institute of Technology……… A. ranks first in the world B. is a university focusing on natural sciences C. focuses on science and engineering 4. What is NOT true about Harvard? A. It was founded in 1636 B. It is the oldest university in the world C. It is located in Massachusetts 5. University of California, Los Angeles…….. A. is in Hollywood B. is different from other universities C. has a high number of applications Giúp mik vs, mik cần gấp lắm

Giải hệ phương trình x^2+y^2=13 3x^2-2y^2=-6

Tìm số nguyên x để x+1 là ước của 5

3. Cho biết tác giả đã sử dụng hình thức diễn đạt nào để bài văn trở nên hấp dẫn, thuyết phục ? 4. Hãy phân tích giá trị của nghệ thuật so sánh trong đoạn văn sau và cho biết tại sao Bác Hồ lại viết như vậy : “ Tinh thần yêu nước cũng như các thứ của quý. Có khi được trưng bày trong tủ kính , trong bình pha lê, rõ rang dễ thấy . Nhưng cũng có khi cất giấu kín đáo trong rương trong hòm. Bổn phận của chúng ta là làm cho những của quý kín đáo đều được ra trưng bày” Cac ban oi giup minh voi

x/50 - x/60 = 1/3 giúp mình với ah

1. My classes start at seven a.m and finish at eleven fifteen. 2. We have English on Monday. 3. Nga’s address is 15,Tran Hung Dao street. 4. She went to Da Lat last summer vocation. 5. Her sister lives with her parents in Ho Chi Minh city . 6. My brother learn English because he wants to become a guide tour. 7. No, I don’t go to school on Sundays. 8. Nam practices speaking English by talking with foreign friends. 9. I have five subjects today . 10. My mother goes to the supermarket twice a week. 11. My hometown is small and quiet. 12. He often waters flowers in the morning . 13. Nga will take a boat trip around the islands tomorrow . 14. I am reading Cinderella. 15. My brother’s favourite book is the story of Mai An Tiem. 16. The main character is brave and strong. 17. The peacocks moves beautifully when we were there . 18. we had science and geography yesterday . 19. I did my homework before I went to bed last night. 20. My mother will buy a new bicycle next month.

Câu 2 (2 điểm): Giải bài toán bằng cách lập hệ phương trình: Năm truóc cả 2 cánh đồng thu hoạch đuoc 650 ta thóc. Năm nay cánh đồng thứ I năng suất tăng 50%; cánh đồng thú II năng suất tăng 70% nên tổng số cả 2 cánh đồng thu hoạch được 1080 tại thóc. Hãy tính số thóc thu hoạch được ở mỗi cánh đồng năm