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20 tháng 11 2021

Help!!!!!!!!!!

16 tháng 2 2022

a)Máy biến thế tăng áp.

b)Ta có: \(\dfrac{n_1}{n_2}=\dfrac{U_1}{U_2}\Rightarrow\dfrac{500}{20000}=\dfrac{220}{U_2}\)

    \(\Rightarrow U_2=8800V\)

c)\(P_{hp}=\dfrac{P^2\cdot R}{U^2}=\dfrac{\left(10^6\right)^2\cdot100}{8800^2}=1291322,314W\)

11 tháng 7 2018

My school is called Vinh Thanh secondary school. My school is very clean and beautiful, teachers and students are very innocent, fun, friendly and hospitable.There are seven hundred students and seventy-five  teachers. There are 25 rooms in the school. Fifteen rooms are for classes, two room is for the teachers, a special room for the Head Teacher and other room. The results of the school is good. . They are high qualified teacher. They teach us with pleasure. They loves us their own children. There is a big play ground in front of the school. I love my school very much.

11 tháng 7 2018

chik lên google dịch ý chứ ko thì dài lắm.

20 tháng 4 2023

- Talk about your activities in seasons . 

As an AI language model, I don't have physical activities that are affected by seasons. However, I can provide some examples of activities that people usually do in different seasons.In the spring, people often engage in outdoor activities such as gardening, hiking, and biking. The weather is mild, and nature is blooming with new growth and fresh colors. It's also a time for spring cleaning and organizing homes.In the summer, people enjoy outdoor activities such as swimming, camping, and barbecuing. The weather is warm, and it's a perfect time for vacations and traveling. Many people also participate in sports and attend outdoor events such as concerts and festivals.In the fall, people often engage in activities such as apple picking, pumpkin carving, and hayrides. The weather is cooler, and nature is changing colors, making it a perfect time for scenic drives and hikes. It's also a time for preparing for the winter season by raking leaves and storing summer gear.In the winter, people engage in activities such as skiing, snowboarding, and ice skating. The weather is cold, and it's a perfect time for cozy indoor activities such as reading, watching movies, and spending time with family and friends. It's also a time for holiday celebrations and preparing for the new year.Overall, each season offers unique opportunities for people to engage in different activities and enjoy the beauty of nature.

- Talk about your plan this summer ( be going to. Mean is use be going to ) 

 I don't have personal plans for the summer since I am a virtual assistant. However, I can provide an example of a plan someone might have using "be going to."I am going to visit my grandparents this summer. They live in a different state, and I haven't seen them in over a year due to the pandemic. I have already booked my flight and made arrangements to stay with them for a week. We plan to spend time together, catch up on each other's lives, and enjoy some of their favorite activities such as fishing and playing cards. I am also excited to explore the area and try some local cuisine. Overall, I am looking forward to this trip and making some special memories with my grandparents.

- Talk about what's your favourite amusement park . 

 Personal preferences or experiences since I am a virtual assistant. However, I can provide some information about popular amusement parks.One of the most famous and beloved amusement parks is Disneyland. Located in Anaheim, California, Disneyland has been entertaining visitors since 1955 with its magical atmosphere, thrilling rides, and beloved characters such as Mickey Mouse and Cinderella. The park is divided into several themed lands, including Fantasyland, Tomorrowland, and Adventureland, each offering unique attractions and experiences.Another popular amusement park is Universal Studios. With locations in Hollywood, Orlando, and Singapore, Universal Studios offers visitors the chance to experience their favorite movies and TV shows through immersive rides and attractions. From the Wizarding World of Harry Potter to the Transformers ride, there is something for everyone at Universal Studios.Six Flags is another well-known amusement park chain with locations throughout the United States, Mexico, and Canada. Known for its thrilling roller coasters and other adrenaline-pumping rides, Six Flags is a popular destination for thrill-seekers and families alike.Overall, there are many amazing amusement parks around the world, each offering unique experiences and attractions.

 

21 tháng 4 2023

bạn có chắc bài làm của bạn có đúng ko vậy , tui đang tham khảo để lấy ý tưởng á . 

19 tháng 8 2017

Like other traditions, patriotism is a special feature of our country's longstanding culture and it is reflected in the past and into every action and thought of every human being. Since ancient times, patriotic spirits have been most prominent in heroic heroes such as Trung, Trieu, Tran Hung Dao, etc. But it was in the war. Now - peacetime - the modernization period with the machines, tools are increasingly useful, practical. Society is moving forward, things have changed a lot, only the patriotic love of each individual is not faded. In the life of ideas, employment helps to develop the economy of the country in part is the patriotic spirit. From farmer feet muddy hands are still as skilful as the day of making rice seeds, rice seeds for agriculture, personal life. Or physicians who are dedicated to helping patients, it is also a gesture of kindness, love of one kind, more broadly that is the patriotism. Politicians, scholars, their achievements are also out of patriotism. Even small acts are part of the contribution to that noble thought. The consciousness of every human being is most clearly revealed. Do not throw litter indiscriminately, keep the environment clean and beautiful green, take care of fresh plants to fresh air atmosphere. It is a beautiful gesture by the patriotism from patriotism. From old people to young children are taught each other to understand and follow that virtue. The passion of patriotism is expressed not by words but by actions that have benefited the country. Responding to movements such as anti-narcotics, propaganda to preserve the environment, avoid social evils, learn and follow Ho Chi Minh's moral example. Is not that patriotic spirit? Newspapers and television also raise the issue of contributing, devoting strength, wisdom to the society, supporting the poor. Programs to understand the country, history to understand, protect and promote the multi-dimensional cultural heritage of the country. All, all because of that beautiful ideal. Specifically, the soldiers outside the border, the island must sacrifice happiness, away from relatives to protect the country, to keep the air in peace. It was patriotism that urged them. That motivation is also the goal, the inspiration, the happiness for them when protected beloved river, preserve the patriotic spirit. Patriotism is to love all that is good, to love nature, to love the sky, to love the sky, to fly birds, to love the rivers of love or to love the fragile leaves .
After all, the patriotism comes from the will, the determination to strive to build the motherland, love and hope. The patriotic spirit includes many other loves: family love, homeland, human love. It is revealed at all times, every individual, anywhere that the people of Vietnam live, it will always be the germ, the bud of the patriotic spirit of Vietnam. And that would not be the ideal of the Vietnamese people but many other countries, that ideal always takes the lead.

29 tháng 1 2023

1 '' Iam going to hanoi tomorrow '' he said

He said that he was going to Hanoi the following day

2 ''I need your help'' Ba said to me

->Ba said to me that  he needed my help

3'' Don't close those windows'' She asked me

->She asked me not to close those windows

4 ''Do your homework now'' he told his childern

->He told his children to do their homework then

5'' Can you wait for me here , please?'' he asked us

->He asked us to wait for him there

7'' You should help your mother with the house work'' He told me

->He told me that I should help my mother with the housework

8'' Are you reading a book now?'' I asked mother

->I asked mother if she was reading a book then

9 ''Did you buy this book yesterday ? ''She asked the boy

->She asked the boy if he had bought that book the previous day

7 tháng 12 2021

9, Let me look after your cat, shall you?

10. May I help you?

11. Huong cared for her dog.

19 tháng 3 2017

Đáp án là 2. Thử thay số vào thôi, còn ko biết giải.

19 tháng 3 2017

\(\dfrac{4x^2}{x^4+1}=\dfrac{-\left(4x^2+4x+1\right)+8x^2+4x+1}{x^4+1}\)

\(=-\dfrac{\left(2x+1\right)^2}{x^4+1}+\dfrac{8x^2+4x+1}{x^4+1}\)

\(-\dfrac{\left(2x+1\right)^2}{x^4+1}\le0\)

vậy M đạt GTLN khi x=-0,5

thay x=-0,5 vào biểu thức\(\dfrac{8x^2+4x+1}{x^4+1}\) , ta được KQ là \(\dfrac{16}{17}\)

vậy GTLN của M là \(\dfrac{16}{17}\) tại x=-0,5

31 tháng 1 2022

Refer

Ninh Binh is the place where I was born. This place has grown up with me. Ninh Binh Que, I love you very much. There are both hills and plains here. Thanks to that, the natural environment here is very rich, it is the suitable habitat for many animals. With a system of dense surrounding limestone mountains, Ninh Binh has been chosen as the capital under many ages. . The air here is very fresh. I like to close my eyes to enjoy the cool breeze of the homeland. Ninh Binh is famous for many tourist attractions. That is Phat Tich Pagoda, Trang An, Cuc Phuong National Park, … The people here are kind and enthusiastic. They are gentle and simple people who work hard. There are many traditional craft villages here that still exist today. The hands of the artisan skillfully create products bearing the national culture. I love Ninh Binh very much. Later, even if I go away, I always remember this place.