Question

1) a) From the set {-8, -2/3, 5i, √(-9), √2, 0, 3+3i, -2.35, 7}

i) List the set of          Natural Numbers

ii) List the set of          Integers

iii) List of the set of    Rational Numbers

vi) List the set of         Real Numbers                                               

b) i) -30 ÷ -6 - (-12 + 8) – 4 x 3 =                           ii) 10(-2) - (-6)4

                          (-10) – 6(-3) =       (4, 4 marks)

2) a) 1²/₅ x 2 ¹/₇ ÷ 1⁴/₅ =                                                                          

2. After winning from a lottery were divided in the ratio 2 : 3 : 5,

If the largest amount received was $150,000.xx

How much was:-         i) The smallest amount =

                                   ii) The Total amount of prize money =         (3, 2 marks)

3) a) i) Calculate the simple interest earned if a deposit of $ 900,000 is

                        left for 12 years at an interest rate of 3% .                           

          ii) Calculate the interest rate for a 12 years investment of $600,000 to gained

                         $180,000 interest.                                                                 

2.    Solve

                             2(3x – 2 )= 6x - 2    + 1

                                      3             4                           (6 marks )                                                                         

c) Solve the following pairs of simultaneous equations

                      3x + y = 7   and     2x - 2y = 2        

Answer 1