Solve the following inequality and graph the solution: \[ (x-8)(x+3)>0 \] Choose test values and indicate whether the inequality is true o false in each region.

Solve for roots of Each quadratic o quaticin shas you complete solution \( 4 x^{2}-81=0 \)

¿Hay repetición? No hayy Como la respuesta de la primera pregunta es ___ se trata de una . Así, la fórmula a usar es: no es necesario responder

1) \( \left(3 \frac{1}{4}+0,2,5-1 \frac{5}{4}\right):\left(2 \frac{1}{4}-4 \frac{1}{2}\right. \). \( -0,75):\left(-4 \frac{1}{2}\right)=\frac{1}{3} \) 1)

\( \Delta K = \frac { 1 } { 2 } m v _ { 2 } ^ { 2 } - \frac { 1 } { 2 } m v _ { 1 } ^ { 2 } \)

\( \begin{array}{ll}\begin{array}{l}\text { Crude oil may contain hundreds of different types } \\ \text { of hydrocarbons. Some examples include: }\end{array} & \begin{array}{l}\text { Identify each of the highighted materials as an } \\ \text { element, a compound, or a mixture, and explain } \\ \text { your reasoning. }\end{array} \\ \text { - Butane }\left(\mathrm{C}_{4} \mathrm{H}_{10}\right) & \\ \text { - Dodecane }\left(\mathrm{C}_{12} \mathrm{H}_{26}\right) & \\ \text { - Benzene }\left(\mathrm{C}_{6} \mathrm{H}_{6}\right) & \\ \text { Many common fuels, such as gasoline and } \\ \text { kerosene, are combinations of these substances } \\ \text { or others. When these fuels burn, they combine } \\ \text { with oxygen }\left(\mathrm{O}_{2}\right) \text { to produce carbon dioxide }\left\{\mathrm{CO}_{2}\right) & \\ \text { and water }\left(\mathrm{H}_{2} \mathrm{O}\right) \text {. }\end{array} \)