\begin{tabular}{l} Pregunta 7 \\ Una urna contiene 13 bolas numeradas del 1 al 13, de las \\ cuales 3 son rojas, 4 blancas y 6 azules, todas idénticas en \\ forma y tamaño. Se selecciona al azar dos bolas de la urna. \\ Calcule la probabilidad de que exactamente una de ellas \\ sea roja, si se extraen las dos a la vez. \\ Seleccione una: \\ a. \( \frac{60}{13} \) \\ b. \( \frac{3}{13} \) \\ c. \( \frac{5}{13} \) \\ d. \( \frac{4}{13} \) \\ \hline\end{tabular}

g) What is the slope of the line \( -2 x+5 y=10 \) ? Write answer as integer or reduced fraction, no decimals. Next Part af 9 Nart

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

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4. True or False: The exterior angle of a regular nonagon measures \( 40^{\circ} \). Falc. 5. What is the sum of interior angles of an octagon? 16. What is the sum of interior angles of a decagon? 17. The sum of the measure of exterlor angles of any regular polygon will always add up to 18. The sum of three of the interior angles of a pentagon is \( 420^{\circ} \). If the remaining angles ar each measure?

What is the distance between the \( (-5,0) \) and \( (0,2) \) ? Write answer as an exact answer no decimals and make sure to simplify if necessary.