Dados los vectores: \( \vec{u} \overrightarrow{1}=(1,3,2) \overrightarrow{u_{2}}=(1,9,0) \) \( \vec{u} 3=(-2,-6,9) \) a) Expresar, si es posible, el vector \( \vec{u} 1 \) como combinación lineal de \( \vec{u} 2 \) y \( \vec{u} 3 \). b) Decir si el conjunto \( A=\{\vec{u} 1, \vec{u} 2, \vec{u} 3\} \) es una base base de R3. Justificar c) Presentar un subespacio de \( \mathbb{R}^{3} \) de dimension 1 que contenga a \( \vec{u} 1 \)

10. Based on the article, what can you infer about the potential for future pandemics and the importance of preparedness?

1. What can you infer about the global impact of COVID-19 based on the number of infections and deaths mentioned in the article? 2. How did the roles of first responders and essential workers contribute to communities during the pandemic?

2 is a quadratic residue modulo 5

What action does the USDA believe could save the United States \( \$ 200 \) million per year in fuel costs? A) increasing irrigation efficiency (B) increasing food prices (C) decreasing dairy farmers Decreasing population growth

12 is a quadratic residue modulo 13. True False