2015 - WAEC Mathematics Past Questions and Answers - page 2
11
Adding 42 to a given positive number gives the same result as squaring the number. Find the number
A
14
B
13
C
7
D
6
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12
Ada draws the graph of y = x2 - x - 2 and y = 2x - 1 on the same axes. Which of these equations is she solving?
A
x2 - x - 3 = 0
B
x2 - 3x - 1 = 0
C
x2 - 3x - 3 = 0
D
x2 + 3x - 1 = 0
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13
The volume of a cone of height 3cm is 38\(\frac{1}{2}\)cm3. Find the radius of its base. [Take \(\pi = \frac{22}{7}\)]
A
3.0cm
B
3.5cm
C
4.0cm
D
4.5cm
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14
The dimension of a rectangular tank are 2m by 7m by 11m. If its volume is equal to that of a cylindrical tank of height 4cm, calculate the base radius of the cylindrical tank. [Take \(\pi = \frac{22}{7}\)]
A
14cm
B
7m
C
3\(\frac{1}{2}\)m
D
1\(\frac{3}{4}\)m
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15
In the diagram, O is the centre. If PQ//Rs and
A
40o
B
50o
C
60o
D
80o
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16
In the diagram, PTR is a tangent to the centre O. If angles TON = 108°, Calculate the size of angle PTN
A
132o
B
126o
C
108o
D
102o
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17
In the diagram, PQ//RT, QR//Su,
A
134o
B
132o
C
96o
D
48o
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18
In the diagram, O is the centre, \(\bar{RT}\) is a diameter, < PQT = 33\(^o\) and <TOS = 76\(^o\). Using the diagram, calculate the value of angle PTR.
A
73o
B
67o
C
57o
D
37o
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19
In the diagram, O is the centre, \(\bar{RT}\) is a diameter, < PQT = 33\(^o\) and < TOS = 76\(^o\). Using the diagram, find the size of angle PRS.
A
76o
B
71o
C
38o
D
33o
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20
\(\begin{array}{c|c}
x & 0 & 1\frac{1}{2} & 2 & 4\
\hline
y & 0 & 5\frac{1}{2} & &
\end{array}\)
The table given shows some values for a linear graph. Find the gradient of the line
x & 0 & 1\frac{1}{2} & 2 & 4\
\hline
y & 0 & 5\frac{1}{2} & &
\end{array}\)
The table given shows some values for a linear graph. Find the gradient of the line
A
1
B
2
C
3
D
4
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