Practice: linking clauses In order to retrieve and study the bones of the early hominids. The paleoanthropologist hired a team of explorers who were thin enough to fit through the cave's extremely narrow chute. Choose 1 answer: (A) NO CHANGE (B) hominids; the (C) hominids, the (D) hominids the

- \( a^{4}+a^{2}+1 \)

¿Cómo explicarlan esta relación entre múltiplos y divisores? 1. A partir de la siguiente cuenta, \( 31 \times 47=1.457 \), decidí si las siguientes afirmacio- nes son verdaderas o falsas. Explicá el porqué en cada una de ellas. a. 47 es divisor de 1.457 .

Consider the line \( y=-\frac{5}{4} x-\frac{1}{5} \) What is the slope of a line perpendicular to this line? What is the slope of a line parallel to this line?

4. Calcule a massa de óxido cúprico \( (\mathrm{CuO}) \) obtida a partir de \( 2,54 \mathrm{~g} \) de cobre metálico \( (\mathrm{Cu}) \). Dados: \( (\mathrm{O}=16: \mathrm{Cu}=63,5) \) \[ \underline{2 \mathrm{Cu}}+\mathrm{O}_{2} \rightarrow \underline{2 \mathrm{CuO}} \]

15. \( \left\{\begin{array}{l}y=-2 x+7 \\ -3 x+y=-8\end{array}\right. \)