Select the correct answer. Auroras are lights that appear at Earth's northyrn and southern poles. What is the main cause of an aurora? A. Solar wind enters Earth's atmosphere, and particles interact with ions. B. Bubbles of gas are ejected from Earth's outer crust. C. Sunlight reflects off the surface of the Moon during an eclipse. D. The northern and southern poles are cooler than the rest of Earth.

Дан треугольник \( A B C \). \( A C=13,2 \) см; \( \angle B=60^{\circ} ; \angle C= \) \( 45^{\circ} \). Найди сторону \( A B \). Ответ упрости до наименьшего натурального числа под знаком корня.)

1: \( f(x)=x \) \( x+\Delta x \)

Determine the oblique asymptote of the graph of the function. \( f(x)=\frac{x^{3}-x^{2}+x-2}{x^{2}+3 x-1} \)

ดให้ \( V_{m}=100 \mathrm{~V}, \omega=300 \mathrm{rad} / \mathrm{s} \)

Identifica y escribe el nombre de la propiedad a la que se hacer referencia: \[ (-3)+(-7)=-10 \quad \in \mathbb{R} \] Seleccione una: a. Cerradura b. Distributiva c. Asociativa e. Inverso f. Elemento neutro