Cho hàm số $f\left(x\right)=\frac{mx-4}{x-m}$ (m là số thực). Có bao nhiêu giá trị nguyên của m thuộc $\left(-6 ; 6\right)$ để hàm số đã cho nghịch biến trên $\left(0 ; +\infty \right)$?

Đặc điểm của vận động theo phương thẳng đứng là gì?

Read the following passage about Wildlife Conservation in Africa and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

Wildlife conservation in Africa is vital for preserving biodiversity and ensuring the survival of iconic species such as elephants, lions, and rhinos. [I] The continent is home to some of the world’s most diverse ecosystems, including savannahs, rainforests, and deserts. [II] Conservation efforts involve strategies like protecting habitats, combating poaching, and raising awareness about the importance of wildlife. [III] Despite challenges, success stories demonstrate the positive impact of these efforts. [IV]

One notable example comes from Kenya, where anti-poaching initiatives and community engagement have helped stabilize elephant populations in Amboseli National Park. Similarly, in South Africa, rhino conservation programs use advanced technologies like drones and GPS tracking to monitor and protect vulnerable animals. These efforts not only safeguard wildlife but also promote eco-tourism, which supports local economies.

However, wildlife conservation in Africa faces persistent threats. Habitat loss due to agricultural expansion and urbanization continues to endanger species. Climate change exacerbates these challenges, altering migration patterns and threatening ecosystems. Furthermore, poaching and the illegal wildlife trade remain significant concerns, driven by global demand for products such as ivory and rhino horn.

To overcome these challenges, conservationists emphasize the need for international collaboration and local community involvement. Initiatives like eco-tourism provide financial incentives for communities to protect wildlife. Governments, NGOs, and individuals must work together to ensure the survival of Africa’s unique species for future generations.

Where in paragraph 1 does the following sentence best fit?

"Africa’s wildlife holds both ecological and cultural significance."

Một vật có khối lượng 200g chuyển động tròn đều trên đường tròn có bán kính 50cm, với tốc độ dài 5m/s. Lực hướng tâm tác dụng vào vật là

So với các môn học khác, môn Địa lí có điểm khác biệt gì?

Nội dung nào dưới đây là sai khi bàn về vấn đề cạnh tranh trong nền kinh tế thị trường?

Một người đi xe máy đi thẳng 6 km theo hướng Đông, sau đó rẽ trái đi thẳng theo hướng Bắc 3 km rồi quay sang hướng Tây đi 3 km. Quãng đường đi được và độ lớn độ dịch chuyển của xe máy lần lượt là

Cơ cấu tổ chức của Hội đồng nhân dân gồm những thành phần nào?

Read the passage and mark the letter A, B, C or D to answer the following questions.
Volunteering offers many of the same social benefits, with the added bonus of helping others and developing useful skills to put on your CV. Plus, students are in a unique position to help, suggests Tom Fox. "They can take their enthusiasm and excitement for opportunities and share their passions, subject knowledge and experience with people." The idea of giving up time for nothing might seem impractical at first, especially once the pressures of study and coursework or exams begin to mount up. However, Michelle Wright, CEO of charity support organization Cause4, suggests seeing volunteering as a two-way street. "I think it is fine for undergraduates to approach volunteering as a symbiotic relationship where doing good is just one part of the motivation for reaching personal and professional goals."
Katerina Rudiger, head of skills and policy campaigns at the Chartered Institute of Personnel and Development (CIPD), says: "Volunteering can be a valuable way of gaining that experience, as well as building confidence, broadening your horizons, becoming a better team player and developing those all- important 'employability skills' such as communication and decision making." Amanda Haig, graduate HR manager, agrees that volunteering can help your employment prospects. "Volunteering can demonstrate positive personality traits and skill sets, such as proactivity, and teamwork," she says.
A positive side-effect of volunteering is improving your time at university by getting involved in the local community. Leaving the student bubble can make your time as an undergraduate much more varied. At Bath Spa University, more than 1,000 students volunteered over the past year, doing everything from working on local environmental projects to helping in schools or assisting the elderly. ”Quite often there can be a divide between students and permanent residents," says students' union president Amy Dawson, "but if students invest a little time now, they will be giving something back to the local community and will reap the benefits in the future."
“You might also find that volunteering helps your studies if you choose the right program. At Lancaster, volunteering is linked into academic modules in some cases", explains Fox. "This has multiple wins. Students get to apply their learning in the classroom and share their interests with children in local schools or community organizations, while schools gain skilled students with a passion for a subject that enthuses their pupils."

Personality traits and skill sets include____________.

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Brady, as seen in a trailer that went viral earlier this week, was incredible that the undisclosed team opted to keep its incumbent starter.

Cho hàm số \(f\left( x \right)=-{{x}^{3}}+m{{x}^{2}}-\left( {{m}^{2}}+m+1 \right)x\). Với \(m\) là tham số thực.

Hàm số nghịch biến trên khoảng \(\left( 1;3 \right)\) khi và chỉ khi:

Phát biểu nào sau đây không nằm trong quy tắc an toàn khi sử dụng dòng điện xoay chiều?

Read the following passage about Key to Addressing Poverty, Gender Disparities, and Environmental Challenges and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.

Social issues are problems that affect a large number of people in society, often creating inequality and hardship. One of the most significant social issues today is poverty. (18)_________, such as food, shelter, and education. In many parts of the world, (19)_________, with families trapped in a cycle of deprivation. While poverty is a complex issue, it is often connected to factors like unemployment and lack of access to education. These factors make it hard for individuals to escape the cycle and improve their lives. To address poverty, governments and organizations must create sustainable policies that focus on education, healthcare, and employment opportunities.

Another pressing issue is gender inequality. In many countries, women still face discrimination in areas like employment and education, limiting their opportunities for personal and economic growth. Even in developed nations, women earn less than men for doing the same work. (20)_________, as people demand equal rights and opportunities for all genders. Moreover, gender inequality can also affect women's health and safety, (21)_________.

Finally, environmental degradation, like pollution and climate change, is a growing global concern. Environmental damage, (22)_________, especially in poorer regions, often affects them the most. The increasing frequency of natural disasters, caused by climate change, is also putting immense pressure on vulnerable populations. Tackling these issues requires a collective effort from both individuals and governments. Only through cooperation and sustainable practices can we hope to create a more equitable and livable world for future generations.

Một vật có khối lượng m trượt trên mặt phẳng ngang. Biết hệ số ma sát trượt giữa vật và mặt phẳng là μ, gia tốc trọng trường là g. Biểu thức xác định lực ma sát trượt là

Each of the following sentences has one error (A, B, C or D). Find it and blacken your choice on your answer sheet.

The key to the success of the project is the dedication of the team, all of which worked tirelessly to meet the deadline.

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a. Mai: Do you think fish head soup is healthy?

b. Mai: You're right. Maybe we should try something else.

c. Lan: Yes, it has lots of protein in it. But, it looks horrible. I think we should replace it.

Vì sao năm 1649, Cách mạng tư sản Anh đạt đến đỉnh cao?

Choose the word or the phrase or sentence that best completes each unfinished sentence below

_________ air is one of the many problems we have to solve.

Trong các câu sau, có bao nhiêu câu là mệnh đề?

(1): Số $3$ là một số chẵn.

(2): $2 x + 1 = 3$.

(3): Các em hãy cố gắng làm bài thi cho tốt.

(4): $1 < 3 \Rightarrow4 < 2$.

Chọn ý đúng: Nhân tố được cho có vai trò quyết định đến sự phát triển của xã hội loài người là?