Free CXC Mathematics Paper 3 January 2019 past paper from 2019. Includes a worked answer key. Open the PDF, take a timed test, and study with AI on Caribbean AI.
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CSEC Mathematics Paper 3 January 2019 - Free CXC Past Paper with Answers
Free CXC Mathematics Paper 3 January 2019 past paper from 2019. Includes a worked answer key. Open the PDF, take a timed test, and study with AI on Caribbean AI.
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Every question from this paper as text. See the answers and worked solutions. Questions are the property of the Caribbean Examinations Council; Caribbean AI is not affiliated with CXC.
The information below represents the minimum temperatures, in , recorded in Country A for the first 20 days in a particular month.
21 23 25 22 24 25 23 26 23 24 25 26 23 25 23 25 24 25 25 25
Complete the frequency table below, using the information above.
| Temperature () |
|---|
| Tally |
|---|
| Frequency |
|---|
| 21 | 1 | |
| 22 | 1 | |
| 23 | ||
| 24 | ||
| 25 | ||
| 26 |
[2 marks]
Complete the frequency table below, using the information above.
| Temperature () | Tally | Frequency |
|---|---|---|
| 21 | ||
| 22 | ||
| 23 | ||
| 24 | ||
| 25 | ||
| 26 |
[2 marks]
Determine the median temperature.
[2 marks]
Calculate the mean temperature for the twenty-day period.
[1 mark]
The diagrams below represent the cross-sections of two circular pizzas, and . The pizzas are similar but vary in size. Pizza has a diameter of 15 cm and Pizza has a diameter of 30 cm.
Determine, by calculation, if Pizza is TWICE the size of Pizza .
[3 marks]
Determine, by calculation, if Pizza is TWICE the size of Pizza .
[3 marks]
Pizza is cut into 5 equal slices and is sold at $6.95 per slice, while Pizza (is sold as a whole) at $9.95. Determine, with reason, which of the two options, (a slice of Pizza or Pizza ), is the better buy for the customer.
[2 marks]
In a football tournament, points are awarded as follows: 3 points for a win, 1 point for a draw and 0 points for a loss. Write a matrix, , to represent this information.
[1 mark]
Write a matrix, , to represent this information.
[1 mark]
During the tournament, Team Alpha recorded 5 wins, 1 draw and 3 losses, while Team Beta recorded 3 wins, 4 draws and 2 losses.
Write a matrix, , to represent this information.
[1 mark]
Calculate the matrix product .
[2 marks]
What does the matrix product represent?
[1 mark]
The values recorded in the table below represent the velocity of an object over a period of time.
| Velocity, (m/s) | 20 | 34 | 46 | 60 |
|---|---|---|---|---|
| Time, (s) | 5 | 12 | 18 | 25 |
On the grid below, two points are plotted. Plot the remaining two points on the grid and draw a line of best fit through the points.
[5 marks]
On the grid below, two points are plotted. Plot the remaining two points on the grid and draw a line of best fit through the points.
[2 marks]
Given that the linear motion of the object can be expressed in the form , where and are constants, use your graph to determine the values of and .
[3 marks]