Grade 11 Maths

 QUESTION 1 QUESTION 2  QUESTION 3  QUESTION 4  QUESTION 5  QUESTION 6  QUESTION 7 

 QUESTION 1  QUESTION 2 QUESTION 3 QUESTION 4 QUESTION 5 QUESTION 6 QUESTION 7 QUESTION 8 QUESTION 9 QUESTION 10 QUESTION 11 QUESTION 12 QUESTION 13  Compile the proof of i) cosine rule                                   ii) sine rule QUESTION 14 QUESTION 15  QUESTION 16 QUESTION 17 QUESTION 18

These are exam -style questions . QUESTION 1  a) Bob runs a small car wash business. He starts saving for new equipment , by investing at 7.5% p.a compounded quarterly. i) What effective rate would give him the same return on his investment? (3)  ii) Bob deposits R10000 immediately . The interest rate for the first year is 7.5% compounded quarterly . At the end of the first year, the interest rate changes to 7.8% compounded monthly.  6 months later , the rate again changes to 7% compounded monthly and he deposits another R5000. What would the investment be worth at the end of the 3rd year  (6)  QUESTION 2  A school decides that they are going to invest R60000 at 12% p.a compounded monthly inorder to put up floodlights on the Hockey AstroTurf. Three years later, the interest rate drops to 1% and it was compounded quarterly . Four years after the first investment , R10000 is withdrawn to buy rugby poles. What is the total investment worth 13 years after the f...