Cho hệ PT\(\hept{\begin{cases}x+y=1\\mx+2y=m\end{cases}}\)
tìm m để pt có nghiệm duy nhất
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chỗ đó là cần phải sửa
vào đầu ngày cuối cùng của kỳ nghỉ, chúng tôi sẽ đến thác nước Poungour. nước rơi từ độ cao gần 40 mét, trải rộng hơn 100 mét, phá vỡ hệ thống cầu thang đá 7 tầng. được bao quanh bởi một khu rừng nguyên sinh với diện tích khoảng 2,5 ha với thảm thực vật phong phú và đa dạng. nhiệt độ trung bình là từ 14 đến 23 độ C. vào buổi tối chúng tôi sẽ đến thăm người thân của chúng tôi. sáng mai sẽ quay lại Tôi rất hào hứng về kỳ nghỉ sắp tới, hy vọng kỳ nghỉ sẽ như tôi phấn khích.
hiệu của hai số là 12 . Một phàn hai số thứ nhất bằng ba phần hai số thứ hai . Tìm số thứ 2
Diện tích thửa ruộng đó là:
\(64\times25=1600\left(m^2\right)\)
Cả thử ruộng đó người ta thu hoạch được số thóc là:
\(1600\times\frac{1}{2}=800\left(kg\right)\)
Đổi: \(800kg=8\)tạ
Đáp số:...
Từ đẳng thức:4.(-18)=(-3).24,ta có 2 phân số bằng nhau là
Trả lời:
\(-\frac{3}{4}=-\frac{18}{24}\)
1.My uncle drove carelessly some years ago, but now he doesn’t. (USED)
=> My uncle used to drive carelessly some years ago.
2.Although she is so young, she performs excellently. (AGE)
=> In spite of her young age, she performs excellently.
3.What’s the distance between New York City and Boston? (FAR)
=> How far is it from New York to Boston?
4.Cris found his performance as King Lear disappointing. (AT)
=> Cris were disappointed at his performance as King Lear.
5. We will reduce our use of electricity to save our energy. (BE)
=> Our use of electricity will be reduced to save our energy.
#chúc_bạn_học_tốt
1. My uncle used to drive carelessly some years ago.
2. Despite her young age, she performs excellently.
3. How far is it from New York to Boston.
4. Cristis were disappointed at his performance as King Lear.
5. Our use of electricity will be reduce to save our energy.
My favorite sport is football. In America it is called Soccer . But I calling it Football. It has been my favorite sport for almost 3 years, when I was 8 years old, , even though praced it anymore, it is still the sport that I love most . Nowadays, most of people in the world football,so it is called the king of sports. Why do people it? I think the reason is that it is easy to play. You can play football every where with condition you have a ball with the right size. Not only men play football but also women can play. There is the World Champion for men players in one time after 4 years, and for Women as well. In addition, football have a big attraction. Every World cup is held, a large number of millions people it on TV and see it directly. Now there are many football club in each country, even district, school in the world. In the football today there are much more money involved, especially in sponsors. But players also cost a lot, There are many players such as C.Ronaldo, Beckham, Zidane who costs over 50 million euro, even over 100 million euro. Many big and famous club have large stadiums with alot of fan all over the world. They can get a great number of billion US dollar from broadcasting copywrite every year and a big avenue from sponsors and advertising. That proves the attration of football. To me, I football because it's a useful, healthful, collective but competitive sport. I overenthusias air on stadium on each match. Anyways football always is the most favorite sport of mine.