4.2 Mpho and Tebogo worked for an old woman in their community by painting her house and cleaning the yard. They were each paid a total amount of R1 280,00 for the work they did. Mpho worked for 28 hrs and Tebogo worked for 36 hrs . 4.2.1 Write the hours that they worked as a simplified ratio. (2) 4.2.2 Calculate how much each of them should be paid.

\[ \left\{\begin{array}{l}\frac{2}{5} x-\frac{1}{3} y=7 \\ -\frac{m}{10} x+\frac{5}{6} y=3\end{array}\right. \] 1. If the system of linear equations above admits no solutions, and m is an integer, what is the value of m ?

The length and breadth of rectangle are ( \( 5 x+4 y) \mathrm{m} \) and \( (2 x+y-5) \mathrm{m} \). find its area. If \( x=2, y-3 \) then find actual area of rectonale.

4. \( 923,52+6,2-532,5-2,3 \)

(a) A box contains 6 identical beads, 2 of which are red and the rest are green. Two beads are selected at random from the box, one after the other without replacement. (i) Draw a tree diagram to illustrate this information. (ii) Calculate the probability that the beads selected are of different colours.

8. Considera o conjunto \( C=\{-\sqrt{7}, \pi\} \). Em qual dos seguintes conjuntos está contido \( C \) ? \( \begin{array}{llll}\text { [A] }]-\sqrt{7}, \pi] & \text { [B] }[-\sqrt{7}, \pi[ & [C]]-\infty,-\sqrt{7}] \cup] \pi,+\infty[ & \text { [D] }[-\sqrt{7},+\infty\end{array} \)