7 When Kenneth cycles in the hills, he finishes 30 km west and 24 km south of where he started. a Find Kenneth's distance from his starting point. b In which direction is the starting point from where Kenneth is now?

c) Let the roots of the quadratic equation \( 2 x^{2}-6 x+9=0 \) be a and 3 . Without solving for a and \( \beta \), evaluate \( \frac{3}{n^{2}-1}+\frac{1}{\nexists-1} \).

3. \( b+\frac{1}{b}=5 \) bo'lsa; \( \frac{b^{4}+1}{b^{2}} \) nitoping

werden können, von denen 2 jeweils gleich sind (Z.B. Der ggT von \( x \) und 204 beträgt 17 . Bestimme alle Zahlen, die kleiner sind als 204 und für \( x \) infrage kommen.

6) Name at least three similarities and three differences between human and bee societies. (15 mark

If \( 2 x-3 y=14 \) and \( -x+2 y= \) -8 , what is the value of \( x+y \) ? A. -2 B. 0 C. 2 D. 6