When converting from moles to particles (such as atoms, molecules, or formula units) or from particles to moles, what is the value that you use? (A) \( 6.022 \times 10^{23} \) (Avogadro's Number) (B) The atomic mass from the periodic table (C) The atomic number from the periodic table (D) The number of electrons

\( \int \frac { \sin x ^ { 2 } x d x } { \sin x ^ { 2 } x d x } = \)

CENSUS The population of Laredo, Texas, was about 215,500 in 2007 . It was about 123,000 in 1990. If we assume that the population growth is constant, write a linear equation with an integer slope to represent \( p \), Laredo's population \( t \) years after 1990.

27-40 a Factorice el polinomio \( y \) use la forma factorizada para ha- Ilar los ceros. A continuación, trace la grafica. \( \begin{array}{ll}\text { 27. } P(x)=x^{3}-x^{2}-6 x & \text { 28. } P(x)=x^{3}+2 x^{2}-8 x \\ \text { 29. } P(x)=-x^{3}+x^{2}+12 x & \text { 30. } P(x)=-2 x^{3}-x^{2}+x \\ \text { 31. } P(x)=x^{4}-3 x^{3}+2 x^{2} & \text { 32. } P(x)=x^{5}-9 x^{3}\end{array} \)

A partir de un conjunto de números \( S \), cuyo prom de \( S \) y sumándole 4 unidades. Si, por ejemplo, 8 e Es correcto afirmar, entonces, que para los eleme a. 9 y 7 b. 9 y 3 c. 13 y 7 d. 13 y 3

Express \( \frac{5}{3}-\frac{x+2}{2 x} \) as a single fraction in its simplest terms.