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Sabah Trial 2023 Mathematics Kertas 1 · JPN

1
Round off 0.034567 correct to three significant figures.
2
What is the weakness of using credit card?
3
Given that $M = \frac{2N}{3N-M}$, express N in terms of M.
4
Express $\frac{2x+6}{y-3} \div \frac{2(x+3)^2}{y^2-9}$ as a single fraction in its simplest form.
5
Given that 2u(w - 1) + 5w = 4u, express w in terms of u.
6
$$(\frac{r}{s})^{-\frac{1}{2}}$$
7
In Diagram 7, MN is a straight line with gradient $\frac{3}{2}$. Find the x-intercept of the straight line MN.
8
The gradient of the line 3x - 4y = 12 is
9
Which of the following graphs represents $y = -3x^2 + 2$?
10
Chanson has baked a rectangular durian cake measuring (6x + 4) cm long and (2x + 4) cm wide. He has cut the durian cake to 6 parts long and 4 parts wide. Calculate the top surface area of a piece of the durian cake.
11
Diagram 11 shows the height of an ocean tide. Which of the following trigonometric function that represents the height of the tide?
12
In Diagram 12, JKL and MNK are straight lines. Given tan q = 0.8. Calculate the length of ML.
13
$$\begin{pmatrix} 2 & 4 \\ 1 & 0 \end{pmatrix} - \begin{pmatrix} -1 & 3 \\ 2 & 1 \end{pmatrix} =$$
14
Given the inverse matrix of $\begin{pmatrix} p & q \\ 2 & 2 \end{pmatrix}$ is $\frac{1}{k} \begin{pmatrix} 2 & -5 \\ -2 & 3 \end{pmatrix}$, find the value of k.
15
What is the antecedent of the implication below? > If 3m = 18, then m = 6
16
| Premise 1 | : All pentagon have five sides | | Premise 2 | : PQRST is a pentagon | Which is the conclusion of above premises to form a valid argument?
17
In Diagram 17, AB and CD are two vertical flag poles on a horizontal plane. The angle of elevation of C from A is 32°.Calculate the height, in m, of CD.
18
In Diagram 18, PQRST is a regular pentagon, SUT is a straight line. Find the value of x.
19
In Diagram 19, PQRST is a regular pentagon and TUVS is a parallelogram. Find the value of x.
20
Given universal set, $\xi$ = {T, E, R, J, A, M, I, N} and X = {R, A, J, I, N}. Determine the complementary element for set X.
21
Which of the following shaded region in the Venn diagrams represent the set $P \cup (Q \cap R)$?
22
A total of 100 children need to choose their favourite food from burger, salad and nasi lemak. 50 children choose burger, 60 children choose nasi lemak, 5 children choose only burger and salad, 3 children choose only nasi lemak and salad and 22 children choose only burger and nasi lemak. If only one child chooses all the three types of food, calculate the number of children who choose salad only.
23
Diagram 23 is a pie chart of composition of four major uniform clubs in a school. The number of members of School Teen Cadet is twice the number of members of Scout. Calculate the percentage of Scout.
24
Table 24 shows information for the mass, in kg, of the two groups of participants. | | Group A | Group B | | Number of participants | 11 | 9 | | Mean | 54 | 50 | | Variance | 2.4 | 1.6 | All participants from the two groups were combined. Calculate the new standard deviation of the mass of the combined participants.
25
$$(-2\frac{3}{5})^2 =$$
26
The frequency table shows the thickness of books on a bookshelf. | Thickness (mm) | Number of books | |---|---| | 5 - 9 | 4 | | 10 - 14 | 7 | | 15 - 19 | 5 | | 20 - 24 | 3 | Determine the range, in mm, for the data.
27
The volume of a hemisphere, V cm$^3$, varies directly as the cube of its radius, r. By taking k as a constant of the variation, express k in terms of V and r.
28
It is given that $r \propto s$ when s = 4 and r = 24. Calculate the value of s when r = 48.
29
Ahmad has three younger brothers named Ali, Aman and Amin. Aman and Amin are identical twins. Their ages are $32_5$, $23_6$, $15_7$, $17_8$ years old respectively. How old is Ali, in years?
30
Which of the following pairs of insurance cover the death of the policyholder?
31
Table 31 shows the number of visitors who visited the Petronas Twin Towers. | Month | Number of visitors | | April | $20200_5$ | | May | $3416_7$ | | June | $7315_8$ | Calculate the mean number of visitors over three months who visited the Petronas Twin Towers.
32
There are 56 participants in a competition. 12 are girls. Then, 37 boys withdraw from the competition. If a participant is chosen at random from the competition, state the probability that the participant chosen is boy.
33
In Diagram 33, OPQT is a semicircle with centre O and OQST is a square. RABU is the arc of circle at centre P with a radius of 6 cm and OACS is a quadrant with centre T. X and Y are the loci of two moving points in the diagram such that XT = 4 cm and YP = 6 cm. Which of the points, A, B, C or D, is the point of intersection of the locus of X and Y?
34
Lena has x mangosteens and y durians. The total number of mangosteens and durians is not less than 120. The number of mangosteens is at most two times the number of durians. Which of the following linear inequalities represent the situation?
35
Diagram 35 shows that KRS is a tangent of the circle at S and O is the centre of a circle. Given that KR = OR and ∠RKO = 28°. Find the value of x.
36
In a group of 30 boys, there are 10 Malay boys, some Chinese boys and some Indian boys. The probability of choosing a Chinese boy is $\frac{2}{5}$. If a boy is chosen at random from the group, find the probability that he is not an Indian boy.
37
Diagram 37 shows a circle KMN, centered at O. JKL is the tangent to the circle at point K. NKP is a straight line and NOM is the diameter of the circle. Find the value of x.
38
Diagram 38 shows a simple graph. Determine the sum of degree of the graph?
39
Diagram 39 shows the shape P and shape Q. Shape P is a scaled drawing of shape Q using a scale of 1 : n. Determine the value of n.
40
Diagram 40 shows two trapeziums, PQRS and ABCD, drawn on square grids. It is given that PQRS is the image of ABCD under an enlargement. Find the centre and the scale factor of the enlargement. | | Centre of enlargement | Scale factor | |:--|:------------------------------------|:-------------------| | A | K | $\frac{1}{3}$ | | B | K | 3 | | C | L | $\frac{1}{3}$ | | D | L | 3 |
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