6.1 The price of a new school bus is R540 000. The value of the bus decreases at 11% per annum according to the diminishing-balance method. Calculate the value of the bus after 8 years. (2) 6.2 Determine the effective interest rate if an investment earns interest at a nominal interest rate of 11,5% per … Read more
6.1 COMPLETE: In ∆ABC b2 = … + … – … 6.2 In the diagram below, PQ is a straight line 1 500 m long. RS is a vertical tower158 m high with P, Q and S points in the same horizontal plane. The angles ofelevation of R from P and Q are 25° and … Read more
Sketched below are the graphs of f(x) = ax2 + bx + c and g(x) = k. mx. The parabola has intercepts (−5; 0) ; (−1; 0) and (0; 2). The exponential graph passes through the points (0; 2) and (1; 6). 6.1 Determine the equation of the parabola in the form of y = … Read more
6.1 Complete: ···= a2 + b2 – 2ab cosĈ .(1) 6.2 TRS is a secant of the circle, and SU is a tangent at U. TU = 16 cm, TR = 12 cm and TÌ‚ = 41°. Calculate the: 6.2.1 Length of UR, correct to two decimals. (3) 6.2.2 Size of Û2 (3) 6.2.3 Length … Read more
6.1 Study the balanced chemical equation of the reaction between sodium carbonate (Na2CO3) and hydrochloric acid (HCâ„“) and answer the questions that follow. Na2CO3 + 2HCâ„“ → 2NaCâ„“ + CO2 + H2O Identify the type of reaction above. Choose between REDOX and GAS FORMING. (1) 6.2 In a reaction, 10,6 g of sodium carbonate reacts … Read more
Two girls, standing at opposite ends of a rope, each makes a pulse of the same speed. Pulse A, with an amplitude of 4 cm, moves to the right and pulse B, with an amplitude of -6 cm, moves to the left. The pulses meet at point C. 6.1 State the phenomenon observed when the … Read more