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Free online IT course from the UK (for use by CXC Information Technology students)

SECTION 1

Answer ALL THREE questions in this section.

1. Her parents were present when Daliah's uncle promised to give her one of the most up-to-date cellphones on her eighteenth birthday. On that day, however, her uncle refused to deliver the cellphone. Daliah was so disappointed that she threatened to sue her uncle for breach of contract.

Section 2

9. (a) Simplify

(i)X² x X³ ÷ X⁴ (1 mark)

(ii)a^3/2b^5/2 x (square root of) ab³. (2 marks)

(b) If ƒ(x) = 2x - 3, find the value of

(i) ƒ(2) (1 mark)

(ii) ƒ^-1(0) (2 marks)

(iii) ƒ^-1 ƒ(2) (2 marks)

(c) The temperature, K. of a liquid t minutes after heating is given in the table below.

t (time in minutes)- 0 - 10 - 20 - 30 - 40 - 50 - 60

K (Temp. in ËšC)- 84 - 61 - 40 - 29 - 27 - 26 - 25

(i) Using a scale of 2cm to represent 10 seconds on the horizontal axis and scale of 2cm to represent 10 degrees on a vertical axis, construct a temperature-time graph to show how the liquid cools in the 60 minute interval.

Draw a smooth curve through all the plotted points. (4 marks)

(ii) Use your graph to estimate

a) the temperature of the liquid after 15 minutes

b) the rate of cooling of the liquid at t = 30 minutes. (3 marks)

Total 15 marks

Hey everyone, I really tried my best to type this out so I hope that you all would be able to understand it. Toney did the rest- questions 12 & 14. But we need help with typing out the others.

SECTION 1

Answer ALL the questions in this section.

All working must be clearly shown.

1. (a) (i) Using a calculator, or otherwise, determine the EXACT value of
(3.9 × 0.27)+ √0.6724 (2 marks)

(ii) Express as a single fraction.
(2 1/2- 4/5)/(3/4) (3 marks)

(b) In this question, use CAN $1.00 = JA $72.50
(i) On a vacation in Canada, Steve used his credit card to buy a camera for CAN $250.00.
What is the value of the camera in Jamaican dollars? (2 marks)

SECTION FOUR

(Suggested time: 30 minutes)

Answer ONE question from this section
Your answer in this section should be approximately 250-300 words in length.
You MUST write in standard English.

7. Caribbean countries would be better served by having women prime ministers. Write an essay EITHER supporting OR opposing this view. (35 marks)

SECTION THREE

(Suggested time: 45 minutes)

Answer ONE question from this section
Your answer in this section should be approximately 400-450 words in length. MUST write in standard in English. However, dialect may be used in conversation.

5. The amusing thing is that I didn't plan it this way. It was just a series of unexpected turns. Write a story which includes these sentences. (35 marks)

DESCRIPTION (Question 6)

The Editor,

These days we have to look at a calendar to be sure that Carnival is really here. Carnival was celebrated regionally last Monday and Tuesday, in Trinidad and Tobago, in Martinique, in Dominica and in Haiti. Yet, I’d be lying if I said that I heard maybe once or twice the latest calypsos for 2006. All we hear on the radio is rap, rap, and more rap. Fifty Cents, Sean Paul, Kanye West and Beyonce dominate the airwaves. However, no one can remember hearing Sparrow, Sugar Aloes or Invader on BET.Tell me, when last did we see a Caribbean steelband on BET?

1. (a) A computer system is made up of both hardware and software.
(i) Define the term "hardware". (2 marks)
(ii) Name THREE pieces of hardware that form part of the computer system. (3 marks)
(b) Suggest an input device that could be used to send photographs by emails. (1 mark)
(Total 6 marks)