1. Skryf 'n getallesin, algebraïese uitdrukking of algebraiese vergelyking om jou te help om die volgende probleme op te los: a. As Pleter sewe jaar jonger is as Jabu en Jabu is twee jaar over as Tshepo, hoe oud is Jabu en Tshepo as Pieter 12 jaar oud is?

10. \( \frac{3}{5}(x-2)-\frac{1}{3}=\frac{4}{15} \)

79 Marco ha percorso il tratto da \( A \) a \( B \) della pista circolare rappresentata in figura. Quanti me- tri ha nercorso?

A patient ingests 5 grams of a certain drug which dissolves away at a constant rate of \( 10 \% \) per hour. How long will it take bofore there is only one gram left? a.) 15.3 hours b.) 15.9 hours c.) 14.2 hours d.) 16.9 hours

(2) \( 2 9 \longdiv { 8 4 3 0 } \)

ii) A numerical integration technique [Note: the work done is given by the area under the curve]