INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.
QUESTION 1
The picture below shows the inter passes amongst four soccer players in a premier league match.
The diagram below, NOT drawn to scale, models the above situation in a Cartesian plane. The diagram below is a parallelogram with vertices A(–2 ; 2) ; B(–4 ; –1) ; C(2 ; 0) and D(4 ; 3); ? is the angle which AB forms with the x-axis.
Determine:
1.1 The length of CD (Leave your answer in simplified surd form.) (2)
1.2 The equation of straight line CD in the form ? = ?? + ? (4)
1.3 The gradient of AB (1)
1.4 The size of ? (rounded off to TWO decimal places) (2)
1.5 The coordinates of M, the point of intersection of the diagonals of ABCD (2)
1.6 The equation of the straight line that is perpendicular to CD and goes through the point M. (3)
[14]
QUESTION 2
2.1 The photo below is the aerial view of a certain town. On a certain day, the community held a big function in the town hall. The noise made could be heard in a
radius of 2√2 km from the hall, centre O.
2.1.1 Calculate the equation of the circle from which the noise could be heard. (2)
2.1.2 If a car travels along the road PQ with the equation, x + y = 4 , determine the coordinates of point Q, where the passengers will be able to hear the noise from. (5)
2.1.3 After passing point Q, will the passengers be able to hear the noise? Justify your answer. (2)
2.2 The diagram below gives a schematic presentation of a cycling track. The shape of the track is given by the ellipse equation . The ellipse intersects the y-axis at B and D. N (ē; -4,8) is a point on the ellipse.
2.2.1 Write down the co-ordinates of B. (2)
2.2.2 Determine the value of e. (3)
[14]
QUESTION 3
3.1 Given: tan β = 2 ; where 90º< β < 270º.
Calculate the following with the aid of a sketch and without the use of a calculator:
3.1.1 sin β (3)
3.1.2 cot (360º - β) + 1 (2)
3.2 If θ = 72º and α = 96º, determine the following, rounded off to TWO decimal digits:
3.2.1 sin (θ + α) (2)
3.2.2 sec α + sin 5π/6 (3)
3.3 If sin 24º = m , determine cos156º in terms of m. (3)
[13]
QUESTION 4
4.1 Complete the following identity: ?????2(10?) − ???2(10?) = ... (1)
4.2 Simplify the following to a single trigonometric ratio:
tan (180º - x)sin (180º + x)cos x (7)
sec2 x
4.3 Prove the following identity using fundamental identities and without using a sketch:
cot2 x sin2 x + sin x = 1 (3)
cosec x
4.4 Solve for ? ∈ [0°; 360°], rounded off to ONE decimal digit:
4.4.1 sec 2x = 2 (4)
4.4.2 2 tan (x - 30°) = -3 (5)
[20]
QUESTION 5
The diagram shows the graph of f(x) = cos 2x for x ∈[0°;360°].
5.1 Draw, on the same set of axes in the SPECIAL ANSWER BOOK, the graph of
g(x) = sin (x - 45°) for x ∈[0°;360°].
Clearly indicate ALL the turning points, starting and end points and intercepts with the axes. (3)
5.2 Use the graphs to determine the following:
5.2.1 The amplitude of g (1)
5.2.2 The period of f (1)
5.2.3 The range of g (2)
5.2.4 f (135°) - g (135°) (2)
5.2.5 The values of x for which f(x) = 1 for x ∈[0°;360°] (3)
5.2.6 The values of x for which f(x) < 0 for x ∈[180°;360°] (2)
5.2.7 The values of x for which f (x)g(x) ≥ 0 for x ∈[0°;360°] (2)
5.2.8 For which value(s) of x is f ́ (x) ˃ 0 for x ∈[0°;180°] (2)
[18]
QUESTION 6
6.1 Complete the following statement:
In any ∆PQR, sin P = sin Q (1)
p ...
6.2 In the diagram below, ∆ABC is drawn with D on AB. Further, BÂC = 80°, BC = 11 units, BD = 6 units and AD = 4 units.
6.2.1 Calculate, rounded off to the nearest degree, the size of ABC. (4)
6.2.2 Hence or otherwise, determine the length of DC. (4)
6.2.3 Determine the area of ∆DBC. (3)
6.2.4 Determine the length of AC. (3)
[15]
QUESTION 7
7.1 Complete the following theorem:
A line drawn from the centre of a circle perpendicular to a chord … (1)
7.2 Given a circle with centre O with OR ⊥ PT, radius OB = 8 cm and PR = 2 cm.
7.2.1 Determine, stating a reason, the length of PT. (3)
7.2.2 Calculate the length of LR. (4)
[8]
QUESTION 8
8.1 Complete the following theorem: Two tangents drawn to a circle from the ... outside the circle are equal in length. (1)
8.2 In the diagram below CD and DE are tangents at C and E respectively to the circle.
C, F and E lie on the circumference of the circle.
DG is parallel to FE with G on FC.
CDE = 46º and CGD = x
8.2.1 Determine, stating reasons, the value of x. (6)
8.2.2 Hence or otherwise show that C, G and D lie on the circumference of a circle. (2)
8.2.3 If CGED is a cyclic quadrilateral, determine, stating reasons, the size of GEF . (3)
8.2.4 Calculate the size of FGˆ E by providing at least two methods of calculating the angle. (3)
8.3 In the diagram below, BE is the diameter of the circle ABCE with centre O.
GF is a tangent to the circle at point C.
EBC = 25º and ABE = 48º .
Determine, giving reasons, the size of the following angles:
8.3.1 BÂE (2)
8.3.2 AÔE (2)
8.3.3 CÊF (2)
8.3.4 EĈF (2)
8.3.5 AĈE (2)
8.3.6 AĈG (3)
[28]
QUESTION 9
9.1 Complete the following theorem: A line drawn parallel to one side of a triangle divides the other two sides … (1)
9.2 In ΔABC below, BCisproduced to G.
9.2.1 Complete, with reason: AE = ... (2)
EF
9.2.2 Determine the length of EF. (3)
9.2.3 If EF = 5 , determine FB. (1)
2
9.2.4 Hence, or otherwise show that BG cannot be more than 3 units. (3)
GC
[10]
QUESTION 10
In the diagram below, BCDE is a circle. Chords CB and DE are produced to meet in A.
AE = DC
Prove that:
10.1 ΔACD ⫴ ΔAEB (4)
10.2 AC.EB = CD2 (3)
10.3 Hence or otherwise, if AC = 13 cm and EB = 3 cm, calculate the length of CD. (3)
[10]
TOTAL: 150
INFORMATION SHEET
MARKING CODES | |
A | Accuracy |
AO | Answer only |
CA | Consistent accuracy |
M | Method |
R | Rounding |
NPR | No penalty for rounding |
NPU | No penalty for units omitted |
S | Simplification |
F | Correct formula |
SF | Substitution in correct formula |
QUESTION 1 | ||||
1.1 | 1.1.1 | x2 - 8x - 33 = 0 (8)2 2(1) 4(1) 33 | ? Factors | (3) |
1.1.2 | x2 - 7x = 10 (-3x -1) | ?S A ? SF CA ?both values of x CA | (3) | |
1.1.3 | -2x2 + 9x+ 5 < 0 | ? Factors SF A | (4) |
1.2 | P = 2(l + w) OR x = 40, 78 or 4, 22 | ?length in terms of x A ?M (Pyth.) CA
OR
?length in terms of x A | (6) | |
1.3 | x = y+ 3 and y - x2 = -2x - 3 | ? Substitution A ?S CA ? Factors SF CA ? Both y-values CA ? Both x-values CA |
OR y = 0 or y = -3 | OR | (5) | |||
? equating Y | A | ||||
? S | CA | ||||
? Factors | CA | ||||
? x-values | CA | ||||
? y-values | CA | ||||
1.4 | 1.4.1 | K = 8 + 32 + 1 = 41 | ? value of K | A | (1) |
1.4.2 | 41 = 1 0 1 0 0 12 | ? 1 0 1 0 0 12 | CA | (1) | |
[23] |
QUESTION 2 | |||
2.1 | Δ = b2 - 4ac < 0 | ?Discriminant < 0 A | (2) |
2.2 | Δ = b2 - 4ac | ? SF A | (4) |
[6] |
QUESTION 3 | |||||
3.1 | 3.1.1 | ? Exponential form / Eksponensiële vorm ? S | A CA | (2) | |
3.1.2 | OR | ?Log property ?Exponential form ?S ?Log property
OR
?Log property ?S ?Log property ?Log property | A CA CA CA A CA CA CA | (4) | |
3.2 | -2 (log 25 - log 4) = 4 | ?Exponential form ?Log property ?Factors | A CA CA | (3) |
3.3 | 3.3.1 | ?M ?Exponential property ?Exponential property | A CA CA | (3) | |||
3.3.2 | log3 (x - 3) - log3 5 = 1 OR log3 (x - 3) - log3 5 = 1 | ?Log property ?Log property ?S OR ?Log property ?Log property ?S | A CA CA A CA CA | (3) | |||
3.4 | x - 3(5i + 2) = 4 - 3i + yi OR x - 3(5i + 2) = 4 - 3i + yi | ?S ?x-value ?y-value
OR ?S ?x-value ?y-value | A CA CA
A CA CA | (3) |
3.5 | V = 110, 4 + 46,1i | ?Substitution A | (5) |
[23] |
QUESTION 4 | |||||
4.1 | 4.1.1 |
| ? SF ?value of r ?value of a | (3) | |
4.1.2 | 0 ≤ y ≤ √10 | ? 0 and √10 CA from 4.1.2 | (2) | ||
4.1.3 | B(-√10;0) | ? Coordinates of B CA from 4.1.1 | (1) | ||
4.1.4 | y= 0 x= 0 | ? x= 0 A ? y= 0 A | (2) | ||
4.2 | 4.2.1 | k(x) = 2( x - 2)2 - 2 OR k(x) = 2( x - 2)2 - 2 | ?Substitution A ?y-int CA OR ?S A | (2) | |
4.2.2 | TP (2; -2) | ?x-coordinate ?y-coordinate | (2) |
4.2 | 4.2.3 | k(x) = 2 ( x - 2)2 - 2 | ?S A ?Equate to 0 CA ?Factors CA ?Both x-values CA | (4) | |
4.2.4 | x ∈ R | ? x ∈ R A | (1) | ||
4.2.5 | ![]() | f: k: | (6) | ||
4.2.6 | y ≥ -2 | ? y ≥ -2 CA | (1) | ||
[24] |
QUESTION 5 | ||||
5.1 | A = P(1+ ni) | ?SF ?S | A CA | (2) |
5.2 | A = P(1+i )n | ?F ?SF ?S | A CA CA | (3) |
5.3 | ? SF A ?S CA ? Sum CA ? SF A ?S CA ?Difference CA ?SF CA ?S CA ? SF A ?S CA ? SF A ? S CA ?SF A ?S CA ?S CA ?S CA | (8) | ||
[13] |
QUESTION 6 | |||||
6.1 | ?F A ?SF CA ?S CA ?S CA ? f '(x) = -2 CA | (5) | |||
6.2 | 6.2.1 | ?3a A ?a- 4 CA | (2) | ||
6.2.2 | ?S A ? x/2 CA ? 3x3 CA
| (3) | |||
6.2.3 | S = ½ ft 2 | ? ft A ? πt CA | (2) |
6.3 | 6.3.3 | f (x) = 3x2 | ?6x A ?S CA ?Equating derivative and av. gradient CA ? x= 5 CA | (4) |
[16] |
QUESTION 7 | |||||
7.1 | g(x) = x3 - 12x - 16 | ?substitution by -2 A ?S CA | (2) | ||
7.2 | g(x) = x3 - 12x - 16 | ?Equating to 0 A | (4) | ||
7.3 | (0; -16) | ? y-intercept A | (1) | ||
7.4 | f(x) = x3 -12x -16 | ?Derivative A | (6) | ||
7.5 | ![]() | ?Shape A ?y-intercept CA ?x-intercepts CA ?Both turning points CA | (4) | ||
7.6 | h(x) = (x - 2)3 - 12(x - 2) -16 | ?h(x) A | (1) | ||
7.7 | -2 > x or x < 2 | √ -2 > x CA ? x < 2 CA | (2) | ||
[20] |
QUESTION 8 | |||||
8.1 | 8.1.1 | q = 820 - p | ? q = 820 - p | A | (1) |
8.1.2 | Z= pq | ?Substitution CA | (2) | ||
8.1.3 | Z = 820 p - p2 | ?Derivative = 0 CA ?S CA | (2) | ||
8.2 | 8.2.1 | R ( x) = -50x2 + 3200x -1860 | ?Substitution A | (2) | |
8.2.2 | R (x) = -50x2 + 3200x -1860 = artisan's maximum earnings | ?Derivative = 0 CA ?S CA | (4) | ||
[11] |
QUESTION 9 | |||||
9.1 | 9.1.1 | ? 2x½ A | (4) | ||
9.1.2 | ?S A | (4) | |||
9.2 | ?A definite integral formula A | (6) | |||
[14] | |||||
TOTAL: | 150 |
INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.
QUESTION 1
1.1 Solve for x:
1.1.1 x2 - 8x - 33 = 0 (3)
1.1.2 x2 - 7x = 10 (-3x+1) (correct to TWO decimal places) (3)
1.1.3 -2x2 + 9x + 5 < 0 (4)
1.2 The diagram below is a rectangle with perimeter equal to 90 cm.
The following formula may be used: Perimeter of a rectangle = 2 (l + w)
Determine the width (x) of the rectangle if the diagonal is 41 cm. (6)
1.3 Solve for x and y simultaneously given that:
x = y+ 3 and y - x2 = -2x - 3 (5)
1.4 Given: K = (1× 23 ) + (1× 25) + 20
1.4.1 Simplify K. (1)
1.4.2 Hence, write K in binary form. (1)
[23]
QUESTION 2
2.1 Given:
Determine the value(s) of m for which the roots will be non-real. (2)
2.2 Determine the nature of roots of ax2 - bx - 1/a = 0; a # 0; a,b∈Q , given that b = 0. (4)
[6]
QUESTION 3
3.1 Simplify the following WITHOUT using a calculator:
3.1.1 (2)
3.1.2 log√65 + log√260 - log13 (4)
3.2 (3)
3.3 Solve for x:
3.3.1 (3)
3.3.2 log3(x - 3) - log3 5 =1 (3)
3.4 Determine the numerical values of x and y if x - 3(5i + 2) = 4 - 3i + yi . (3)
3.5 Convert V = 110, 4 + 46,1i to polar form. (5)
[23]
QUESTION 4
4.1 In the diagram below, the graphs of g and h are defined by and h (x) = a/x respectively. The point of intersection of g and h is A (1;3).
Determine:
4.1.1 The value(s) of a and r (3)
4.1.2 The range of g (2)
4.1.3 The coordinates of point B (1)
4.1.4 The equation of the asymptotes of h (2)
4.2 Given the functions f and k defined by f (x) = 2x and k(x) = 2( x - 2)2 - 2.
4.2.1 Determine the y-intercept of k (2)
4.2.2 Write down the coordinates of the turning point of k (2)
4.2.3 Determine the x-intercepts of k (4)
4.2.4 Write down the domain of f (1)
4.2.5 Sketch the graphs of f and k on the same set of axes on the ANSWER SHEET provided. Clearly show the asymptotes, intercepts with the axes and the coordinates of any turning points. (6)
4.2.6 Write down the range of k. (1)
[24]
QUESTION 5
5.1 Sam hired an angle grinder, as shown in the picture below, at a tool hire shop at a flat rate of 15% per hour plus R35.
Determine how much it will cost to hire the angle grinder for 9 hours.(2)
5.2 The present population of a small town is 13 565. It is stated that the population grows annually at a compound growth rate of 6,5%. Determine the population size of this town after 8 years. (3)
5.3 Linzo deposited R 120 000,00 in an investment account. She further deposited R50 000,00 into the same account after 12 months. She withdraws R35 000,00 from the same account to pay for repairs to the roof of her house at the end of 2 years.
Calculate the balance of the account after 5 years.(8)
[13]
QUESTION 6
6.1 Determine f'(x) by using FIRST PRINCIPLES if f (x) = -2x+ ¼ (5)
6.2 Determine the following:
6.2.1 (2)
6.2.2 (3)
6.2.3 where f is a constant and f = π (2)
6.3 Determine the numerical x-value between 2 and 8 such that the instantaneous rate of change of f (x) = 3x2 is equal to the average rate of change over the interval x ∈[2;8]. (4)
[16]
QUESTION 7
Given: g(x) = x3 - 12x - 16
7.1 Show that ( x + 2) is a factor of g. (2)
7.2 Determine the x-intercepts of g. (4)
7.3 Write down the coordinates of the y-intercept of g. (1)
7.4 Determine the coordinates of the turning points of g. (6)
7.5 Sketch the graphs of g on the ANSWER SHEET provided. Show clearly the intercepts with the axes and the coordinates of any turning points. (4)
7.6 Without simplifying the equation, determine the defining equation of h if g (x) is shifted so that the local maximum coincides with (0;0 ). (1)
7.7 Determine the values of x for which g'(x) > 0 . (2)
[20]
QUESTION 8
8.1 The sum of two numbers, p and q, is 820.The greater number is p and the smaller number is q.
8.1.1 Write q in terms of p. (1)
8.1.2 Show that the product, Z, of the two numbers is given by Z = 820 p - p2 . (2)
8.1.3 Determine the value of p if the product Z is a maximum. (2)
8.2 An artisan’s earning ability in rand, R, varies with the artisan’s work experience in years, x, according to the formula:
R (x) = -50x2 + 3200x - 1860
8.2.1 Calculate the artisan’s earnings after 15 years’ work experience. (2)
8.2.2 Determine the maximum earnings of the artisan. (4)
[11]
QUESTION 9
9.1 Determine the integral:
9.1.1 (4)
9.1.2 (4)
9.2 The sketch below shows the shaded bounded area of the curve of the function f defined by f (x) = 4x - x2.
Determine (showing ALL calculations) the shaded area bounded by the curve and the x-axis between the points where x = 1, 5 and x = 3 . (6)
[14]
TOTAAL: 150
INFORMATION SHEET: TECHNICAL MATHEMATICS P1
ANSWER SHEET
QUESTION 4.2.5
QUESTION 7.5
QUESTION 1 | ||
1.1 | a = 62 | value of a |
(5) | ||
1.2 | Skewed to the right OR Positively skewed | answer |
(1) | ||
1.3 | Yes | Yes |
(2) | ||
[8] |
QUESTION 2 | |||||||||||||||||||||||||||||||||||||
2.1 | Positive impact The number of learners obtaining lower marks decreased while those obtaining higher marks increased in the Post Test. | positive impact reason | (2) | ||||||||||||||||||||||||||||||||||
2.2 | 20 < x ≤ 30 | answer | (1) | ||||||||||||||||||||||||||||||||||
2.3 | Less | answer | (1) | ||||||||||||||||||||||||||||||||||
2.4 | |||||||||||||||||||||||||||||||||||||
| Frequency Cummulative frequency | (4) | |||||||||||||||||||||||||||||||||||
2.5 | ![]() | Grounding Upper limits used Shape | (3) | ||||||||||||||||||||||||||||||||||
2.6 | Pre: 90 – 78 = 12 learners obtained 60% and more | 12 | (3) | ||||||||||||||||||||||||||||||||||
[14] |
QUESTION 3 | ||
![]() | ||
3.1 | t = 2 | value of t |
(1) | ||
3.2.1 | substitution answer (2) | |
3.2.2 | mPR =y2 - y1 = 0 - 6 | substitution gradient of PR (2) |
3.3 | tan RPS = 6/7 | tanθ = 6/7 |
3.4 | mPR = 6/7 ∴ ΔPRQ is not right angled at R OR RQ2 =100 | substitution OR
substitution |
3.5 | mnewline = mPQ = - 4/7 | gradient of new line | (3) |
3.6 | SP = 7 units | length of SP | (5) |
[22] |
QUESTION 4 | |||
![]() | |||
4.1.1 | x2 + y2 + 6x - 6y + 9 = 0 | method | (4) |
4.1.2 | method | (3) | |
4.1.3 | mLM OR mKM | (4) | |
4.1.4 | ( x + 3)2 + ( y - 3)2 = 9 | value of x | (2) |
4.2.1 | L ( – 3 ; 3) | value of x |
4.2.2 | mML/ = -4 - 1 = - 5 Not passing through the origin | mML/ |
[19] |
QUESTION 5 | ||
5.1.1 | value of x | |
5.1.2 | expansion | |
5.1.3 | reduction | |
5.2.1 | 1- cosθ = 0 or sinθ = 0 OR θ = 360º.k or θ =180º + 360º.k (k∈θ) | method |
5.2.2 | common denominator | |
5.3 | LHS/LK = sin (x - y) | identity |
[20] |
QUESTION 6 | ||
6.1.1 | 1 | 1 (1) |
6.1.2 | 120° | 120° (1) |
6.2 | f (x) = g(x) | cos(x - 60º) - cos(90º - 3x) |
6.3 | ![]() | f: g: |
6.4 | x = -30º or x = 150º | both values of x beide waardes van x |
(1) | ||
6.5 | f (x) = cos(x - 60º + 15º) | h(x) = cos (x – 45°) |
(1) | ||
[15] |
QUESTION 7 | ||
![]() | ||
52 = 42 + 52 - 2(4)(5) cos A | substitution into cosine rule | (5) |
[5] |
QUESTION 8 | |
![]() | |
OM ⊥ CD (line from centre which bisects the chord) | S/R |
[5] |
QUESTION 9 | ||
![]() | ||
9.1 | R2 = Q2 ( ∠s in the same segment) | S/R |
9.2 | S2 = T2 = x (∠s in the same seg) | S/R |
9.3.1 | R1 + x + 90º - x = 180º ( sum of ∠s of Δ) | S |
9.3.2 | P = 90º (∠in thesemicircle) | S |
9.4.1 | Q2 = T2 = x (∠s opp. equal sides) ∴ Q2 = S2 ∴RS||QT (Alt ∠s are equal) | S/R R (2) |
9.4.2 | U2 = Q2 = x VW is a tangent to circle passing through QUT (Converseof tan-chord theorem) | S R (2) |
[17] |
QUESTION 10 | ||
![]() | ||
10.1 | Construction: Draw diameter GOE. Join EH | construction |
(5) |
10.2 | ![]() | |
10.2.1 | Kite | answer (1) |
10.2.2 | KLO = 90º (tan ⊥ rad.) | S/R |
10.2.3 | KLO + KPO = 90º + 90º | S |
10.2.4 | K + LOP =180º (Opp.∠sof cyclicquad.) OR M = 67º ( ∠s opp. = sides) | S/R OR S/R |
[18] |
QUESTION 11 | ||
![]() | ||
AP = 3 (Prop. theorem; PQ||BC) | S/R | |
[7] | ||
TOTAL: | 150 |
INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.
QUESTION 1
The box and whisker diagram below represents soccer clubs’ standings from position 1 to 14 after playing an equal number of games.
The following table is partly completed, from top (position 1) to bottom (position 14):
Position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
Points | a | 59 | 58 | b | 49 | 45 | c | 42 | 37 | 36 | d | 32 | 32 | e |
1.1 Write down the values of a, b, c, d and e. (5)
1.2 Comment on the skewness of the data. (1)
1.3 One commentator says the top four teams each had at least 50 points. Do you agree with the commentator or not? Justify your answer. (2)
[8]
QUESTION 2
A school organised a weekend camp for the 90 grade 12 learners doing Mathematics. Learners wrote a pre-test (test before classes started) and a post-test (test after classes finished), out of 50 marks. Below is the graph representing the data.
2.1 Use the graph to conclude whether the camp had a positive impact (improved performance) or not. Give a reason for your answer. (2)
2.2 Write down the modal class of pre-test marks. (1)
2.3 Is the mean mark of the pre-test greater than, less than or the same as that of the post-test? (1)
2.4 Complete the frequency and cumulative frequency table in the ANSWER BOOK.
Marks | Frequency | Cumulative Frequency | ||
Pre-test | Post-test | Pre-test | Post-test | |
0 ≤ x < 10 | ||||
10 ≤ x < 20 | ||||
20 ≤ x < 30 | ||||
30 ≤ x < 40 | ||||
40 ≤ x < 50 |
(4)
2.5 Draw the cumulative frequency graphs (ogives) using the grid provided in the ANSWER BOOK. (3)
2.6 The teacher targeted to have 50% more learners to get 60% or more in post-test compared to pre-test. Determine, with the necessary calculations or justification, whether the teacher achieved the target or not. (3)
[14]
QUESTION 3
∆RPQ with vertices R(2; 6), P (– 5; 0) and Q(t; – 4) is given below. RQ is perpendicular to the x-axis and cuts the x-axis at S. O is the origin.
3.1 Write down the value of t. (1)
3.2 Determine:
3.2.1 the length of PR. Leave your answer in simplest surd form. (2)
3.2.2 the gradient of PR. (2)
3.3 Determine the size of PRQ . (5)
3.4 Determine whether ΔQPR is right angled at P or not. (4)
3.5 Determine the equation of the line parallel to PQ and passing through the origin. (3)
3.6 Determine the value of Area of ΔSPR (5)
Area of ΔPRQ
[22]
QUESTION 4
In the diagram below, the smaller circle with diameter KM passing through centre L has a tangent at M and y-intercept at N. The equation of the smaller circle is
x2 + y2 + 6x - 6y + 9 = 0
The bigger circle passes through M. The origin, O and K (– 5 ; 5) is given.
4.1 Determine:
4.1.1 the coordinates of L and the length of the radius of the smaller circle (4)
4.1.2 the coordinates of M (3)
4.1.3 the equation of tangent AMB in the form y = …. (4)
4.1.4 the coordinates of N (2)
4.2 If the coordinates of the centre of the bigger circle is a result of shifting the coordinates of L, 5 units to the right and 7 units down.
4.2.1 Write down the coordinates of the centre of the new circle. (2)
4.2.2 Determine whether the diameter of the bigger circle from a common point of contact M passes through the origin or not. (4)
[19]
QUESTION 5
5.1 Given that sin ∝ = - 5/13 and tan ß = - 3/4 where ∝, ß ∈[90º ;270º] , calculate, without the use of a calculator, the value of:
5.1.1 sin (∝+ ß) (5)
5.1.2 cos 2ß (3)
5.1.3 tan (– ∝ – 180⁰ ) (2)
5.2 Consider the identity:
sin θ - cos θ = 1
1 - cos θ sin θ sin θ
5.2.1 For which value(s) of θ , for θ∈[0º;360º] is the identity undefined? (2)
5.2.2 Prove the identity. (4)
5.3 If tan x = 3k and tan y = 2k, determine sin (x - y) in terms of k (4)
cos x.cos y
[20]
QUESTION 6
Given the functions:
f (x) = cos(x - 60º) and g(x) = sin3x for x∈[ -90º;180º]
6.1 Write down:
6.1.1 the amplitude of f (1)
6.1.2 the period of g (1)
6.2 Determine the values of x for which f(x) = g(x) for x ∈ [– 90° ; 180°] (6)
6.3 On the same set of axes, sketch the graph of f and g for x ∈[–90°; 180°] in the SPECIAL ANSWER BOOK. Show ALL intercepts with the axes as well as turning and end points. (5)
6.4 For which value(s) of x is g(x)/f(x) undefined for x ∈[–90°; 180°]? (1)
6.5 Write down the equation of h(x) if h(x) is a result of shifting f(x), 15⁰ to the left. (1)
[15]
QUESTION 7
The diagram below shows ΔABC with lengths 5, 5 and 4 units.
Determine the numerical value of cos A-cos B (5)
[5]
Give reasons for your statements in QUESTIONS 8, 9, 10 and 11.
QUESTION 8
In the diagram below, O is the centre of circle A, B, C and D. M is the midpoint of chord CD. Line OM is drawn. AB is the diameter. AB = 22 cm and OM = 7 cm.
Determine, with reasons, the length of CD. (5)
[5]
QUESTION 9
In the diagram below, a bigger circle PQRST intersects a smaller circle at R and S. VW is a tangent of the smaller circle at U. SUQ and TUR are straight lines.
Chords RQ, QP, PT, QT, TS and SR are also drawn. RTQ = x .
9.1 Prove, with reasons, that ΔRUS ||| ΔQUT. (3)
9.2 Determine, with reasons, THREE other angles each equal to x. (4)
9.3 If RQT = 90° – x , determine :
9.3.1 whether QT is a diameter or not. (4)
9.3.2 P (2)
9.4 If it is further given that UQ = UT, show that:
9.4.1 RS || QT (2)
9.4.2 VW is also a tangent to the circle passing through QUT at U. (2)
[17]
QUESTION 10
10.1 In the diagram below, O is the centre of circle FGH with DG a tangent at G.
Prove the theorem which states that DGH = F. (5)
10.2 In the diagram below, O is the centre of circle LMP with tangents KL and KP at L and P respectively. OLM = 67º
10.2.1 What type of quadrilateral is KLOP? (1)
10.2.2 Give, with reasons, 3 angles each equal to 90°. (5)
10.2.3 Prove, stating reasons, that KLOP is a cyclic quadrilateral. (2)
10.2.4 Hence, determine K . (5)
[18]
QUESTION 11
In the diagram below, ∆ABC is drawn with PQ || BC and RS || AC.
AQ : QC = 3 : 5 and BR : RA = 1 : 3
Prove that AP = PR. (7)
[7]
TOTAL: 150
INFORMATION SHEET: MATHEMATICS
NOTE:
QUESTION 1 | ||
1.1.1 | 2x(x +1) = 0 | x = 0 |
1.1.2 | 2x(x - 3) = 1 Penalise 1 mark for incorrect rounding off. | standard form |
1.1.3 | x2 - 2x - 15 ≤ 0 | factors OR x ∈[-3 ; 5] (3) |
1.1.4 | 3 + a - 2√a | (3) | |
1.2 | x - 2 y = 3 .......................(1) | x = 2y + 3 | (6) |
1.3.1 | For equal roots Δ = 0 | Δ = 0 | (4) |
1.3.2 | Consider axis of symmetry | method | (2) |
[24] |
QUESTION 2 | |||
2.1 | 23 ; 21 ; 19 ; . . . ; – 47 | substitution | (2) |
2.2.1 | T2 - T1 = T3 - T2 | method | (3) |
2.2.2 | first term and common difference
| (4) | |
2.3.1 | 25 ; 48 ; 69 ; 88 ; x ; y | √ x = 105 | (2) |
2.3.2 | 2a = -2 3a + b = 23 a + b + c = 25 | value of a | (4) |
2.3.3 | n = -b = -(26) = 169 | method | (3) |
2.4 | expanding answer | (2) | |
[20] |
QUESTION 3 | |||||
3.1 | Alevel1 = 1 × πR2 OR a = πR2 ; r = ½ OR Alevel 4 = 8 × π(1/8R)2 | √√√ Areas for levels 1 to 3 answer value of a value of r substitution | (4)
(4) | ||
3.2 | formula | (3) | |||
[7] |
QUESTION 4 | ||||
4.1 | -x2 - 4x + 5 = 0 | solving for x-intercepts | (4) | |
4.2 | x = (-5 + 1) = -2 or x = -(-4) = -2 | x-value | (3) | |
4.3 | a = 1 and q = 5 | a = 1 | (2) | |
4.4 | Length of ND = 9 (from 4.2) | ND = 9 TD = 3 NT = 6 | (3) | |
4.5 | S( -4 ; 5) m = f'(-4) | coordinates of S | (5) | |
[17] |
QUESTION 5 | |||
5.1 | A(1 ; 0) | answer | (1) |
5.2 | f (x) = k g(x) = log p x 2 = logp 9 | k = 6 p2 = 9 | (3) |
5.3 | y = log3x | interchanging x and y | (2) |
5.4 | Range of g -1 | √√ answer | (2) |
5.5 | 6 = log3x + 1 | (3 ; 1) point on g | (2) |
[10] |
QUESTION 6 | |||
6.1 | g(x) = (x + 2)( y + 3) = k | standard form | (3) |
6.2 | - 5 = k - 3 2 0 + 2 1 = k 2 2 | substitution | (2) |
6.3 | y = -(x + 2) - 3 | substitution | (2) |
[7] | |||
QUESTION 7 | |||
7.1 | formula substitution
| (3)
(3) | |
7.2 | ![]() | substitution use of logs solving for n answer | (4) |
7.3 | ![]() | ||
= R73762,18 | subtraction |
QUESTION 8 | ||
8.1 | Answer only = 0 marks | −7?2 − 14?ℎ − 7ℎ2 |
8.2.1 | √ x-4 + x½ | |
8.2.2 | (x½ + 2)(x½ - 2) | |
[10] |
QUESTION 9 | ||||
9.1 | g(-5) = (-5)3 + (-5)2 -16(-5) + 20 | substitution | (2) | |
9.2 | g(x) = x3 + x2 -16x + 20 | (x2 - 4x + 4) | (3) | |
9.3 | g'(x) = 3x2 + 2x -16 = 0 | g'(x) | (4) | |
9.4 | ![]() | intercepts with the axes | (3) |
9.5 | g''(x) = 6x + 2 OR g''(x) = 6x + 2 = 0 | g''(x) substitution conclusion g''(x) x = - 1/3 conclusion | (3) | |
9.6 | OR -8/3 ≤ x ≤ 0 or x ≥ 2 | (3) | ||
[18] | ||||
QUESTION 10 | ||||
10.1 | multiplication | (2) | ||
10.2 | ![]() | method | (5) | |
[7] |
QUESTION 11 | |||
11.1.1 | P( A or B) = P( A) + P(B) - P( A and B) | P(B) = 0,4 | (3) |
11.1.2 | P( A and/en B) = 0, 2 | P(A) x P(B) = 0,2 | (3) |
11.2.1 | P(R or G) = 1 OR (100%) | answer | (1) |
11.2.2 | ![]() | first branch with labels second branch with labels third branch with labels outcomes | (4) |
11.2.3 | method | (5) | |
[16] | |||
TOTAL: | 150 |
INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.
QUESTION 1
1.1 Solve for x, in each of the following:
1.1.1 2x ( x +1) = 0 (2)
1.1.2 2x(x - 3) =1 (correct to TWO decimal places) (4)
1.1.3 x2 - 2x -15 ≤ 0 (3)
1.1.4(3)
1.2 Solve simultaneously for x and y in the following equations:
x - 2 y = 3
4x2 - 5xy = 3 - 6 y (6)
1.3 The equation 3mx2 - px + 5 = 0 ; m # 0 and p # 0 , has equal roots.
1.3.1 Show that f (x) = 3mx2 - px + 5 has a minimum value. (4)
1.3.2 If it is further given that p < 0 , draw a sketch graph of f (x) = 3mx2 - px + 5 . (2)
[24]
QUESTION 2
2.1 Determine which term of the sequence: 23; 21; 19; . . . is - 47. (2)
2.2 The first three terms of an arithmetic sequence are: 3x - 1 ; x + 5 ; 2x - 4
2.2.1 Calculate the value of x. (3)
2.2.2 Determine the number of terms of which the sum is equal to zero. (4)
2.3 Given the quadratic pattern: 25 ; 48 ; 69 ; 88 ; x ; y ; . . . Determine:
2.3.1 The values of x and y (2)
2.3.2 The general term, Tn of the quadratic pattern (4)
2.3.3 The value of the largest term of this pattern (3)
2.4 Calculate the value of a, if: (2)
[20]
QUESTION 3
A circular disk of radius, R is cut out of paper as shown in the diagram. Two disks of radius, ½R are cut out of paper and placed on top of the first disk, as shown. Then four disks of radius, ¼R are cut out of paper and placed on top of the two disks, as shown.
3.1 If this process can be repeated, determine the area of the disks on the fourth level only. (4)
3.2 Calculate the total area of all the disks, if the process is repeated indefinitely. (3)
[7]
QUESTION 4
Given: f (x) = -x2 - 4x + 5 and g(x) = ax + q. E, M and P are the intercepts of the graphs with the axes. N is the turning point and NTD the axis of symmetry of f . T is a point on the graph of g and S is the reflection of M about the axis of symmetry.
Determine:
4.1 The coordinates of M, E and P (4)
4.2 The coordinates of N (3)
4.3 The values of a and q (2)
4.4 The length of NT (3)
4.5 The equation of the tangent to f at point S (5)
[17]
QUESTION 5
In the figure below, two sketch graphs are shown for: f (x) = k/x , where x > 0 and g(x) = log p x
5.1 Write down the coordinates of A. (1)
5.2 Determine the values of k and p. (3)
5.3 Determine the equation of g -1 in the form y = ... (2)
5.4 Write down the range of g -1 . (2)
5.5 Solve for x if 6 - log3x = 1 (2)
x
[10]
QUESTION 6
Given: g(x) = (x + 2)(y + 3) = k ; for k > 0 , is a hyperbola with g(0) =- 5/2 . Determine:
6.1 The equations of the asymptotes of g (3)
6.2 The value of k (2)
6.3 The equation of the axis of symmetry of g which has a negative gradient (2)
[7]
QUESTION 7
7.1 Convert a nominal interest rate of 8,9% a. compounded monthly to effective interest rate per annum. (3)
7.2 Alan retires and decides to invest R1 000 000 of his retirement lump sum. The bank offers him an interest rate of 12,6% a. compounded monthly. How long will it take for his money to double? (4)
7.3 R60 000 is invested in an account which offers interest at 7% a. compounded quarterly for the first 18 months. Thereafter the interest rate changes to 5% p.a. compounded monthly. Three years after the initial investment, R5 000 is withdrawn from the account. How much money will be in the account at the end of 5 years? (7)
[14]
QUESTION 8
8.1 Given f (x) = -7x2. Determine f'(x) from first principles. (4)
8.2 Determine dy if:
dx
8.2.1 y = 1 + √x (3)
x4
8.2.2 y = x - 4 (3)
x½ - 2
[10]
QUESTION 9
Given: g(x) = x3 + x2 -16x + 20
9.1 Show that (x +5) is a factor of g(x). (2)
9.2 Hence, or otherwise determine the x-intercepts of g. (3)
9.3 Determine the coordinates of the turning points of g. (4)
9.4 Sketch the graph of g(x), showing clearly the intercepts with the axes and the turning points. (3)
9.5 Discuss the concavity of the graph at the y-intercept. Support your answer with relevant (3)
9.6 For which values of x will x. f'(x) ≥ 0? (3)
[18]
QUESTION 10
The total cost of producing x cellphones per day is given by rand and each cellphone is sold for a price of
rand.
10.1 Determine an expression for money raised from the sale of x (2)
10.2 How many cellphones should be made daily to maximise the profit? (5)
[7]
QUESTION 11
11.1 Given:
11.1.1 Determine P(A or B) (3)
11.1.2 Your teacher claims that events A and B are independent. Do you agree or disagree? Justify your answer with (3)
11.2 A bag contains five red and y green marbles.
11.2.1 What is the probability that a red or a green marble will be drawn from the bag? (1)
11.2.2. Two marbles are drawn successively without Represent this using a tree diagram. Label all the branches and write down the outcomes. (4)
11.2.3 Determine how many green marbles are in the bag if the probability of drawing two marbles of the same colour is 31/66 .(5)
[16]
TOTAL: 150
INFORMATION SHEET: MATHEMATICS
The History P2 Grade 12 September was written on Tuesday, 14 September 2021. We were made aware of certain amendments and omissions that were discovered during the marking process.
In order to address this and to ensure that learners are not disadvantaged, the following standardised approach to marking must be adopted across the Province. The following guidelines regarding marking was prepared in conjunction with the examiner and moderator.
QUESTION NUMBER | ERRATA |
2.3.1 | The rights of all human beings to be treated equally and with dignity |
2.3.3 |
|
2.3.4 | To pursue criminal prosecution |
2.5 | Source 2C should be changed to Source 2D and Source 2B changed to Source 2D |
2.6 | The TRC offered full amnesty .. (Source 2C) TRC provided a platform..... (Source 2C) Deetlefs revealed ...... (Source 2C) Jill Burger revealed ..... (Source 2D) The family had no choice (Source 2D) |
3.2.2 |
|
3.2.3 | Remove the bullet: the unemployment rate increased to 1,7 million |
The Geography P1 Grade 12 September was written on Tuesday, 31 August 2021. We were made aware of certain amendments and omissions that were discovered during the writing process.
In order to address this and to ensure that learners are not disadvantaged, the following standardised approach to marking must be adopted across the Province. The following guidelines with regard to marking was prepared in conjunction with the examiner and moderator.
There was an unintended error in QUESTION 3 (3.2 and 3.4.3) in Geography P1. The alphanumeric grid did not correspond with the symbols referred to in these respective questions. A total of 7 marks could have been potentially compromised here. Most Grade 12 learners would still have been able to source the symbols referred to in the map and answered these sub-questions.
However, if there were learners that were 'confused' or unfairly prejudiced by this we propose the following:
The examination panel stresses that this must only apply to schools where learners were unable to answer these sub-questions based on the incorrect alphanumeric grid.
Schools who had no issue with this should mark the paper as normal out of 150.
Total Mark out of 23 | Converted mark from 23 to 30 |
23 | 30 |
22 | 29 |
21 | 27 |
20 | 26 |
19 | 25 |
18 | 23 |
17 | 22 |
16 | 21 |
15 | 20 |
14 | 18 |
13 | 17 |
12 | 16 |
11 | 14 |
10 | 13 |
9 | 12 |
8 | 10 |
7 | 9 |
6 | 8 |
5 | 7 |
4 | 5 |
3 | 4 |
2 | 3 |
1 | 1 |
We request that this must be brought to the attention of all educators marking these papers and sincerely apologise for the inconvenience.
SECTION A: SHORT QUESTIONS
QUESTION 1
1.1
1.1.1 C
1.1.2 B
1.1.3 A
1.1.4 D
1.1.5 B
1.1.6 D
1.1.7 C
1.1.8 C
1.1.9 D
1.1.10 B
1.1.11 C
1.1.12 C
1.1.13 D
1.1.14 A
1.1.15 A
1.1.16 A
1.1.17 B
1.1.18 B
1.1.19 A
1.1.20 B (20 x 1) (20)
1.2
1.2.1 Market share
1.2.2 Cash
1.2.3 Colosseum
1.2.4 CCTV cameras
1.2.5 Repeat visits (5 x 1) (5)
1.3
1.3.1 red
1.3.2 summer
1.3.3 jet fatigue
1.3.4 Central Africa
1.3.5 5 (5 x 1) (5)
1.4
1.4.1 C (The Sphinx)
1.4.2 F (The Berlin Wall)
1.4.3 A (ǂKhomani Cultural Landscape)
1.4.4 E (Statue of Christ the Redeemer)
1.4.5 G (Mapungubwe Cultural Landscape) (5 x 1) (5)
1.5
TOTAL SECTION A: 40
SECTION B:
MAP WORK AND TOUR PLANNING; FOREIGN EXCHANGE
QUESTION 2
2.1
2.1.1
OR
OR
2.1.3
2.2
2.2.1 B / Passport (2)
2.2.2 A health certificate is a statement signed by a health-care provider (such as a doctor or nurse) that verifies the health of the bearer of the certificate or verifies that the bearer of the certificate has had certain vaccinations. (2)
2.2.3
2.3
2.3.1 Business tourist
2.3.2
[33]
QUESTION 3
3.1
3.2
3.3
3.3.1
3.3.2
3.3.3 USA
3.4
[17]
TOTAL SECTION B: 50
SECTION C: TOURISM ATTRACTIONS; CULTURE AND HERITAGE TOURISM; MARKETING
QUESTION 4
4.1
4.1.1
4.1.2
4.2
4.2.1 Overcrowding
4.2.2 The historic city is built on wooden platforms anchored into 118 small islands in a lagoon linked by canals and bridges.
4.2.3 Fast-food packaging waste contributed to an increase in litter.
Water pollution was caused by fast-food packaging waste being dumped in the canals.
4.2.4
[24]
QUESTION 5
5.1 IsiMangaliso Wetland Park (2)
5.2 KwaZulu-Natal (2)
5.3
5.3.1
5.3.2 Create international awareness of South Africa’s World Heritages Sites.
Encourage the youth and local population to preserve their cultural and natural heritage.
[14]
QUESTION 6
6.1 UK and Ireland
6.2 The shared photos would create an awareness of South Africa as a travel destination during the Covid-19 pandemic.
The shared photos could lead to an increase in new arrivals from UK and Ireland once travel restrictions are lifted.
6.3 The Tourism Levy South Africa (TOMSA), a private sector initiative, collects a 1% Tourism Levy, voluntarily paid by customers, from participating tourism businesses, for example tour operators, car rental companies and accommodation establishments.
The Tourism Business Council of South Africa (TBCSA) administers TOMSA.
The TBCSA ensures that the collected funds are made available to SATourism for marketing. (3 x 2) (6)
[12]
TOTAL SECTION C: 50
SECTION D:
TOURISM SECTORS; SUSTAINABLE AND RESPONSIBLE TOURISM
QUESTION 7
7.1 Contract of employment (1)
7.2 Employees should sign a contract of employment so that they are aware of the employers’ expectations.
7.3 Code of conduct of Penika Airways (1)
7.4 A code of conduct sets out what is important to a business (its ethics and principles) and prescribes how staff should behave while at work.
It helps to identify and state clearly which behaviour is welcome and which is not.
7.5 The CEO was justified in being unhappy about Susan complaining to passengers about her shift as she acted in an unprofessional manner by complaining to passengers. (2)
7.6 The cabin crew has to deal with the challenges of passengers with many differing needs and expectations.
[12]
QUESTION 8
8.1 Sustainability
Fair share
8.2 A destination that is Fair Trade Tourism accredited will attract environmentally conscious tourists. This could lead to an increase in visitor numbers.
A destination that is Fair Trade Tourism accredited will encourage positive word of mouth advertising.
8.3
8.3.1
NOTE: Accept suitable examples of practices.
8.3.2
8.3.3
8.4 People should be educated about protecting our planet because:
8.5
8.5.1 Mashovhela Lodge can put programmes in place that acknowledge the local culture and heritage.
8.5.2 Mashovhela Lodge can:
Implement community shareholding in the business.
[18]
TOTAL SECTION D: 30
SECTION E: DOMESTIC, REGIONAL AND INTERNATIONAL TOURISM; COMMUNICATION AND CUSTOMER CARE
QUESTION 9
9.1
9.1.1 The G7 summit will focus the world's media and TV on Cornwall providing exposure to a global audience.
9.1.2 Potential transport disruptions such as road closures in areas around the venues being used for the event, roadblocks, disruption of train schedules.
Influx of international visitors.
9.1.3 Global measures introduced to contain the virus led to a stop of tourism activities around the world.
9.2
9.2.1
9.2.2 2016 (2)
9.2.3 Above and below line promotional techniques
Special offers
NOTE: Accept examples of marketing techniques. (4)
[20]
QUESTION 10
10.1 Web-based
10.2 Offers valuable guidance from people who have used a service or product.
10.3 The image of the business will be damaged.
[10]
TOTAL SECTION E: 30
GRAND TOTAL: 200