A jewvillery store sells beaded neckisces. Each necilace costs R40 lor the wire and Ris per bead. There exists a linear refationship between the cost of the nediace and the number of beads the neckiace has. The cost, \( C \), is dependent on the number of beads, \( n \). Choose the graph that represents this relationship correctly:

(ii) \( \frac{2}{5} \times \frac{1}{5} \times \frac{25}{8} \times \frac{4}{1} \times \frac{2}{1} \)

I. " \( \forall x, y \in R, x \cdot y=y \cdot x " \) II. " \( \forall x, y \in R, x+y=0 \Rightarrow x=0 \wedge y=0 \) " III. " \( \forall x \in R-\{0\} \) için \( \exists y \in R \) vardır. Öyle ki \( x \cdot y=1 \) 'dir. önermelerinden hangileri doğrudur? \( \begin{array}{lll}\text { A) Yalnız I } & \text { B) Yalnız II } & \text { C) I ye II } \\ \text { D) I ve III } & \text { E) II ve III }\end{array} \)

At what yearly interest rate, compounded half-yearly, should Mary invest R20 000 in order to have R28000 available after 30 months? The correct answer, rounded to two decimal places, is

5) Montrer que pour tout \( n \geq 4 \) et \( n-4 \) est multiple de 5 , on a : \( n^{2}-1 \) est un multiple de 5

In the apposite figure, the bone (O) is cannected to the Axial skeleton through...., bones