1998 - WAEC Mathematics Past Questions and Answers - page 2
11
Find the number whose logarithm to base 10 is 2.6025
A
0.0004
B
4.004
C
40.04
D
400.4
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12
A piece of cloth was measured as 6.10m. If the actual length of the cloth is 6.35, find the percentage error, correct to 2 decimal places
A
3.05%
B
3.95%
C
15.00%
D
25.00%
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13
Simplify (\frac{8^{\frac{2}{3}}*27^{\frac{-1}{3}}}{64^{\frac{1}{3}}})
A
-3
B
\(\frac{1}{9}\)
C
\(\frac{1}{3}\)
D
\(\frac{27}{8}\)
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14
Solve the equation 5x2 - 4x - 1 = 0
A
-1, 1/5
B
-1, -1/5
C
1, 1/5
D
1, -1/5
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15
p and q are two positive numbers such that p > 2q. Which one of the following statements is not true?
A
-p < -2q
B
-p > -2q
C
-q < 2p
D
q < 1/2p
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16
For what value of x is the expression
x - 5/x2 - 2x - 3
A
3, 1
B
-1, -3
C
-1, 3
D
3, -2
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17
Make S the subject of the formula: (V = \frac{K}{\sqrt{T-S}})
A
\(T-\frac{K^2}{V^2} = S\)
B
\(T+\frac{K^2}{V^2} = S\)
C
\(T-\frac{K^2}{V} = S\)
D
\(T-\frac{K}{V} = S\)
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18
Find the equation whose roots are (\frac{2}{3}and \frac{-1}{4})
A
\(12x^2+11x+2=0\)
B
\(12x^2-11x+2=0\)
C
\(x^2-\frac{11}{12}x+2=0\)
D
\(x^2+\frac{11}{12}x-2=0\)
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19
Find (X-Y) if 4x - 3y = 7 and 3x - 2y = 5
A
4
B
3
C
2
D
-2
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20
solve the inequality ((Y-3)<\frac{y}{3})
A
y > -9
B
y < 3
C
y > 4
D
y < 9
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