25. พื้นห้องหนึ่งเป็นรูปสี่เหลี่ยมผืนผ้า มีพื้นที่ 108 ตารางเมตร ถ้าห้องมีความกว้าง 9 เมตร ห้องนี้มีความยาวกี่เมตร ก. 12 ข. 13 ค. 14 ง. 15

Divide. \[ \frac{12 y^{4}+8 y^{3}+8 y-12}{3 y^{2}+2 y-3} \]

Construct a truth table for the statement \( (q \rightarrow r) \leftrightarrow \sim p \).

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

1) \( \frac{11 x-5}{14 x}+\frac{3 x-2}{14 x} \)

6. Мотоцикпші жолдың \( 1 / 4 \) бөлігін 2 сағ 50 минутта журіп өтсе, толық жолды журіп өтуге қанша сағат жұмсайды? (A) 10 сағ 20 мин (B) 10 сағ 40 мин (C) 11 сағ 20 мин (D) 11 сағ 40 мин