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In future, when robots can be used both in homes and in other areas, it could improve the standard of living of people. House hold chores took significant cut in humans' life. Many people burn their energy on their day to day tasks cooking, cleaning etc after coming from work. When robots can complete such jobs, people can spend more time with their family and friends. Experts say that many major problems in the modern world are caused due to miscommunication. When people get more time, they can talk freely and resolve such issues and eventually create happy society. Robots can be used on certain jobs to curb accidents due to negligent behaviour of some people. When robots are used on such work, it does not cause any human life due to accidents at the work places. Human resource can be efficiently used by involving humans to perform those tasks which demand human skills crial thinking, problem solving etc while robots can be used on low end jobs moving cargos, heavy weights lifting etc. While some people talk about how robots can be useful to human, others voice their concerns demotion in human values and creation of lazy society due to heavy dependency on robots. When robots become cheaper to produce, employers may prefer to use more robots than humans. As the technology constantly improves the capabilities of robots, it could undermine the values of humans. Many people may rely on robots heavily. Some may even develop a habit of using robots on tasks that they can easily do. This could create lazy society. Humans could start to cherish robots at the expense of human lives. In conclusion, robots can be used on anything which can eventually improve humans' standard of living but definitely not at the expense of human lives. Robots can be used to help humans to live in harmony and to form happy societies. This fundamental setup should not be allowed to deteriorate by robots
Robots produce more accurate and high quality work. Robots rarely make mistakes and are more precise than human workers.They can produce a greater quantity in a short amount of time.They also can work at a constant speed with no breaks, days off, or holiday time.and perform applications with more repeatability than humans. Robots save time by being able to produce a greater magnitude of products.They reduce the amount of wasted material used due to their accuracy, too
~Study well~
Gọi 2/x là phân số cần tìm
Ta có: 1/6<2/x<1/5
=> 2/12<2/x<2/10
=> 12>x>10
=> x=11
Vậy phân số cần tìm là 2/11
Nước lừ trên cao phóng xuống định nuốt chửng con thuyền. Nhưng ở phía dưới dượng Hương Thư nhanh như cắt vừa thả sào, vừa rút sào nhịp nhàng, đều đặn. Con thuyền được giữ thăng bằng vẫn xé ngang dòng nước lao nhanh. Nó chồm lên sấn tới, hùng dũng hơn cả dòng thác dữ. Nhưng dượng Hương Thư cũng không chịu thua. Các bắp thịt cuộn lên, hai hàm răng cắn chặt, quai hàm bạnh ra, cặp mắt nảy lửa, dượng ghì mạnh trên ngọn sào để giữ cho con thuyền được an toàn. Lúc ấy, nhìn dượng giống như một pho tượng đồng đúc vững chãi và mạnh mẽ. Quả thật, hình ảnh dượng trụ sào giữ thuyền giữa dòng thác dữ còn khiến tôi liên tưởng đến hình ảnh một hiệp sĩ của Trường Sơn oai linh hùng vĩ.
#Hk_tốt
#Ken'z
\(\left(3\frac{1}{2}+2x\right).2\frac{2}{3}=5\frac{1}{3}\)
\(\Rightarrow\left(\frac{7}{2}+2x\right)\cdot\frac{8}{3}=\frac{16}{3}\)
\(\Rightarrow\frac{7}{2}+2x=\frac{16}{3}\div\frac{8}{3}\)
\(\Rightarrow\frac{7}{2}+2x=\frac{16}{3}\cdot\frac{3}{8}\)
\(\Rightarrow\frac{7}{2}+2x=2\Rightarrow2x=2-\frac{7}{2}\Rightarrow2x=-\frac{3}{2}\)
\(\Rightarrow x=\frac{-3}{2}\div2\Rightarrow x=-\frac{3}{2}\cdot\frac{1}{2}=-\frac{3}{4}\)
b, \(\left|2x+3\right|=5\)
\(\Rightarrow\orbr{\begin{cases}2x+3=5\\2x+3=-5\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}2x=2\\2x=-8\end{cases}\Rightarrow\orbr{\begin{cases}x=1\\x=-4\end{cases}}}\)
a) (3 1/2 + 2x ) . 2 2/3 = 5 1/5
( 7/2 + 2x) . 8/3= 16/3
7/2 + 2x = 16/3 : 8/3
7/2 + 2x = 2
2x = 2- 7/2
2x = -3/2
x = -3/2 : 2
x = -3/4
trả lời câu hỏi trên hỏi đáp và phải cs người trên 12 đ tk đúng cho mk
Đặt \(A=\frac{10^{1990}+1}{10^{1991}+1}\)
\(\Rightarrow10A=\frac{10\cdot(10^{1990}+1)}{10^{1991}+1}\)
\(=\frac{10^{1991}+10}{10^{1991}+1}=\frac{10^{1991}+1+9}{10^{1991}+1}=1+\frac{9}{10^{1991}+1}\)
Đặt \(B=\frac{10^{1991}+1}{10^{1992}+1}\)
\(\Rightarrow10B=\frac{10\cdot(10^{1991}+1)}{10^{1992}+1}=\frac{10^{1992}+10}{10^{1992}+1}=\frac{10^{1992}+1+9}{10^{1992}+1}=1+\frac{9}{10^{1992}+1}\)
Tự so sánh được rồi -_-
Help Me
Tui cần gấp
Đúng tui k nhưng làm hẳn ra nha :)
Nếu lâu thì làm mẫu 1 vài phần OK :)
a) \(2A=2^1+2^2+2^3+...+2^{2010}\)
=> \(2A-A=2^{2011}-2^0\Leftrightarrow A=2^{2011}-1\)
b) \(3B=3+3^2+3^3+3^4+...+3^{101}\)
=> \(3B-B=3^{101}-1\Leftrightarrow2B=3^{101}-1\Leftrightarrow B=\frac{1}{2}\left(3^{101}-1\right)\)
Tương tự Cx4, Dx5
\(C=\frac{3}{3\cdot5}+\frac{3}{5\cdot7}+...+\frac{3}{2013\cdot2015}\) mới đúng nhé :">
Ta có: \(C=\frac{3}{3\cdot5}+\frac{3}{5\cdot7}+...+\frac{3}{2013\cdot2015}\)
\(\Rightarrow\frac{3}{2}C=\frac{2}{3\cdot5}+\frac{2}{5\cdot7}+...+\frac{2}{2013\cdot2015}\)
\(\Rightarrow\frac{3}{2}C=\frac{1}{3}-\frac{1}{5}+\frac{1}{5}-\frac{1}{7}+...+\frac{1}{2013}-\frac{1}{2015}\)
\(\Rightarrow\frac{3}{2}C=\frac{1}{3}-\frac{1}{2015}=\frac{2015}{6045}-\frac{1}{6045}\)
\(\Rightarrow C=\frac{2014}{6045}:\frac{3}{2}=\frac{2014}{5045}\cdot\frac{2}{3}=\frac{4028}{15135}\)
\(C=\frac{3}{3.5}+\frac{3}{5.7}+\frac{3}{7.9}+...+\frac{3}{2013.2015}\)
\(=\frac{3}{2}\left(\frac{2}{3.5}+\frac{2}{5.7}+\frac{2}{7.9}+...+\frac{2}{3013.2015}\right)\)
\(=\frac{3}{2}\left(\frac{1}{3}-\frac{1}{5}+\frac{1}{5}-\frac{1}{7}+\frac{1}{7}-\frac{1}{9}+...+\frac{1}{2013}-\frac{1}{2015}\right)\)
\(=\frac{3}{2}\left(\frac{1}{3}-\frac{1}{2015}\right)\)
\(=\frac{3}{2}.\frac{2014}{6045}\)
\(=\frac{4028}{15135}\)
Study well ! >_<
câu A sai
góc phụ góc nhọn=>góc đó+góc nhọn =90 độ
=>góc đó <góc vuông<góc tù
k for me =>
