2. A flash contains \( 300 \mathrm{~cm}^{2} \) of dilute sodium hydroxide, \( \mathrm{NaOH}_{\text {laq })} \) of concentration \( 0,167 \mathrm{~mol} \mathrm{dm}^{-3} \) Calculate the number of moles of sodium hydroxide in the flask.

a. \( y=-3 x-1 \)

b) Let the universal set be the set of real numbers \( \mathbb{R} \) and. let \( A=(-3,4|, B=|-1,7| \) and \( C=[2,10 \mid \). Find each of the following and display the solution on the real line \( \begin{array}{lll}\text { (i) } A-C & \text { (ii) }(A \cap B)^{r} \cap C & \left.\text { (iii) } \mid(A r \cup B)^{r} \cup A\right)^{r} \cup B\end{array} \)

- Suche die Gesetumassigket und falle die Tabelle aus. - Notere, um welche At des Vhachstums - linear, nicht linear oder exponentiell - es sich cabei - Begunde.

The angle BDA is \( 55^{\circ}, \mathrm{AE}=7 \mathrm{~cm}, \mathrm{BA}=20 \mathrm{~cm} \) and \( \mathrm{BC}=9 \mathrm{~cm} \). Calculate the area of the trapezium.

\( \left[\begin{array}{lll}4 & 0 & 1 \\ 2 & 0 & 2 \\ 3 & 0 & 3\end{array}\right] \) in Row echion metho