WAEC - Mathematics (1989)

  • 1
    If 3loga + 5loga - 6loga = log64, what is a?
    תְשׁוּבָה
    (C)
    8
  • 2
    If the second and fourth term of a G.P are 8 and 32 respectively,what is the sum of the first four terms?
    תְשׁוּבָה
    (D)
    60
  • 3

    In the diagram above, TPS is a straight line, PQRS is a parallelogram with base QR and height 8cm. |QR| = 6cm and the area of triangle QST is 52cm2. Find the area of ΔQPT

    תְשׁוּבָה
    (B)
    28cm2
  • 4

    In the diagram O is the center of the circle, if ∠QRS = 62o, find the value of ∠SQR.

    תְשׁוּבָה
    (B)
    28o
  • 5
    Evaluate, using logarithm tables \(\frac{5.34 \times 67.4}{2.7}\)
    תְשׁוּבָה
    (C)
    133.2
  • 6
    Factorize 35 - 2b - b2
    תְשׁוּבָה
    (B)
    (7+b)(5-b)
  • 7
    Evaluate \(\frac{0.009}{0.012}\), leaving your answer in standard form.
    תְשׁוּבָה
    (C)
    7.5 x 10-1
  • 8
    The graph above is that of a quadratic function y = 2x2 - x - 6
    The roots of the equation are
    תְשׁוּבָה
    (B)
    -1.5, 2
  • 9
    Factorize the following expression; 2x2 + x - 15
    תְשׁוּבָה
    (B)
    (2x-5)(x+3)
  • 10
    The angle of elevation of X from Y is 30o. If XY = 40m, how high is X above the level of Y?
    תְשׁוּבָה
    (B)
    20m
  • 11
    Instead of recording the number 1.23cm of the radius of a tube, a student recorded 1.32cm. Find the percentage of error, correct to one decimal place.
    תְשׁוּבָה
    (B)
    7.3%
  • 12

    In the diagram above, ∠SPR = P and ∠SQR = 2x. Find x in terms of P

    תְשׁוּבָה
    (D)
    x = p/2
  • 13

    In the diagram above ABDE and FCDE are parallelograms. If |FC| = 12.2cm and the height |PC| = 4.0cm, calculate the area of the parallelogram ABDE.

    תְשׁוּבָה
    (E)
    48.8cm2
  • 14

    Using the above graph, if 10º < x < 60º, what is the value of x for which sin x = cos x?

    תְשׁוּבָה
    (D)
    45o
  • 15

    The venn diagram below shows the number of students who studied Physics, Chemistry, and Mathematics in a certain school. How many students took at least two of the three subjects?

    תְשׁוּבָה
    (B)
    160
  • 16
    An arc of a circle radius 7cm is 14cm long. What angle does the arc subtend at the center of circle?
    [Take π = 22/7]
    תְשׁוּבָה
    (E)
    114.55o
  • 17
    If twice a certain integer is subtracted from 5 times the integer, the result is 63. Find the integer.
    תְשׁוּבָה
    (A)
    21
  • 18
    If 3\(^y\) = 243, find the value of y.
    תְשׁוּבָה
    (D)
    5
  • 19
    Points X and Y are respectively 20km North and 9km East of a point O. What is the bearing of Y from X? Correct to the nearest degree
    תְשׁוּבָה
    (C)
    156o
  • 20

    In the diagram above, O is the center of the circle. Calculate the length of the chord AB if |OA| = 5cm, |OD| = 3cm and ∠AOD = ∠BOD

    תְשׁוּבָה
    (D)
    8cm
  • 21
    Calculate the surface area of a hallow cylinder which is closed at one end, if the base radius is 3.5cm and the height 8cm.[take π = 22/7]
    תְשׁוּבָה
    (D)
    214.5cm2
  • 22
    Solve the following equation: 6x\(^2\) - 7x - 5 = 0
    תְשׁוּבָה
    (C)
    x = 1 2/3 or x = -1/2
  • 23

    What angle represents grown up girls ? Correct to one decimal place

    תְשׁוּבָה
    (B)
    26.7o
  • 24

    What percentage of the population are married? correct to one decimal place

    תְשׁוּבָה
    (D)
    35.2%
  • 25
    If A = {a,b,c}, B = {a,b,c,d,e} and C = {a,b,c,d,e,f}. Find (A∪B)∩(A∪C)
    תְשׁוּבָה
    (B)
    {a,b,c,d,e}
  • 26
    What is the mode of the score
    תְשׁוּבָה
    (E)
    7
  • 27
    What is the median score?
    תְשׁוּבָה
    (C)
    5
  • 28
    What is the range of the distribution?
    תְשׁוּבָה
    (B)
    7
  • 29

    In the diagram above O is the center of the circle, if ∠PAQ = 75o, what is the value of ∠PBQ?

    תְשׁוּבָה
    (C)
    105o
  • 30
    Simplify \(\frac{9^{-\frac{1}{2}}}{27^{\frac{2}{3}}}\)
    תְשׁוּבָה
    (E)
    1/27
  • 31

    In the diagram above, what is the size of angle ACB?

    תְשׁוּבָה
    (C)
    60o
  • 32

    With reference to the graph above, which of the following solution sets is represented by ΔOPQ?

    תְשׁוּבָה
    (B)
    y ≤ x, y ≥ 0, y + x ≤ 7
  • 33
    Find the volume of a cone of radius 3.5cm and vertical height 12cm [Take π = 22/7]
    תְשׁוּבָה
    (E)
    154.0cm3
  • 34

    The table above gives the scores of a group of students in an English Language test


    If a student is chosen at random from the group, what is the probability that the scored at least 6 marks?
    תְשׁוּבָה
    (C)
    1/4
  • 35
    The angle of a sector of a circle of diameter 8cm is 135°. Find the area of the sector [Take \(\pi\) = 22/7].
    תְשׁוּבָה
    (C)
    \(18\frac{6}{7}cm^2\)
  • 36

    In the diagram above, O is the center of the circle QRT and PT is a tangent to the circle at T. Calculate the angle x

    תְשׁוּבָה
    (E)
    20o
  • 37

    Which of the following gives the point of intersection of the graph y = x2 and y = x + 6 shown above?

    תְשׁוּבָה
    (C)
    (-2,4)(3,9)
  • 38
    A sector is cut off from a circle radius 8.2cm to form a cone, if the radius of the resulting cone is 3.5cm, calculate the curved surface area of the cone. [take π = 22/7]
    תְשׁוּבָה
    (E)
    90.2cm2
  • 39
    If logax = p, express x in terms of a and p
    תְשׁוּבָה
    (E)
    x = ap
  • 40
    Calculate and correct to three significant figures, the length of an arc subtends an angle of 70o at the center of the circle radius 4cm. [Take π = 22/7]
    תְשׁוּבָה
    (B)
    4.89cm
  • 41
    In the diagram above, O is the center of the circle. If ∠POR = 114o, calculate ∠PQR
    תְשׁוּבָה
    (A)
    123o
  • 42
    The angle of depression of a point on the ground from the top of a building is 20.3o. If the foot of the building is 40m, calculate the height of the building, correct to one decimal place
    תְשׁוּבָה
    (D)
    14.8m
  • 43
    Solve for x: (x2 + 2x + 1) = 25
    תְשׁוּבָה
    (D)
    -6, 4
  • 44
    Given that logp = 2 logx + 3logq, which of the following expresses p in terms of x and q?
    תְשׁוּבָה
    (E)
    p = x2q3
  • 45
    sinθ = \(\frac{1}{2}\) and cosθ = -\(\frac{\sqrt{3}}{2}\), what is the value of θ?
    תְשׁוּבָה
    (E)
    150 o