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Each of the interior angles of a regular polygon is 140o. Calculate the sum of all the interior angles of the polygon
A1080o
B1260o
C1800o
D2160o
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Question 402
waec2009
If c and k are the roots of 6 - x - x2 = 0, find c + k
A2
B1
C-1
D-3
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Question 403
waec2009
If a positive integer, list the values of x which satisfy the equation 3x - 4 < 6 and x - 1 > 0
A{1, 2, 3}
B{2, 3}
C{2, 3, 4}
D{2, 3, 4, 5}
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Question 404
waec2009
solve \(\frac{2x + 1}{6} - \frac{3x - 1}{4}\) = 0
A1
B\(\frac{1}{5}\)
C-\(\frac{1}{5}\)
D-1
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Question 405
waec2009
An arc of a circle subtends an angle of 60o at the centre. If the radius of the circle is 3cm, find , in terms of \(\pi\), the length of the arc
A\(\pi\)cm
B2\(\pi\)cm
C3\(\pi\)cm
D6\(\pi\)cm
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Question 406
waec2009
The capacity of a water tank is 1,800 litres. If the tank is in form of a cuboid with base 600cm by 150 cm. Find the height of the tank
A2cm
B20cm
C200cm
D2000cm
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Question 407
waec2009
If 85% of x is N3230, what is the value of x?
AN2745.50
BN3714.50
CN3800.00
DN4845.00
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Question 408
waec2009
If 92x = \(\frac{1}{3}\)(27x), find x
A2
B1
C-1
D-2
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Question 409
waec2009
Express 2.7864 x 10-3 to 2 significant figures
A0.28
B0.27
C0.0028
D0.0027
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Question 410
waec2009
What is the median of the following scores: 22 35 41 63 74 82
A82
B52
C49
D22
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Question 411
waec2009
In an examination, Kofi scored x% in Physics, 50% in Chemistry and 70% in Biology. If his mean score for the three subjects was 55%, find x
A40
B45
C55
D60
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Question 412
waec2009
Given that sin 60o = \(\frac{\sqrt{3}}{2}\) and cos 60o = \(\frac{1}{2}\), evaluate \(\frac{1 - sin 60^o}{1 + cos 60^o}\)
A\(\frac{2 + \sqrt{3}}{3}\)
B\(\frac{1 - \sqrt{3}}{3}\)
C\(\frac{1 + \sqrt{3}}{3}\)
D\(\frac{2 - \sqrt{3}}{3}\)
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Question 413
waec2009
If M and N are two fixed points in a plane. Find the locus L = [P : PM = PN]
Aa line equal to MN
Bline parallel to MN
CPerpendicular bisector of MN
DA circle centre P, radius MN
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Question 414
waec2009
The interior angles of a pentagon are (2x + 5)o, (x + 20)o, xo, (3x - 20)o and (x + 15)o. Find the value of x
A80o
B70o
C65o
D40o
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Question 415
waec2009
The diameter of a bicycle wheel is 42cm. If the wheel makes 16 complete revolution, what will be the total distance covered by the wheel? [Take \(\pi \frac{22}{7}\)
A672cm
B1056cm
C2112cm
D4224cm
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Question 416
waec2009
Factorize x2 - 2x - 3xy completely
A(x - 2)(3x - y)
B(x - 3y)(x - 2)
C(x - 3y)(x - 3y)
D(3x + y)(x - 2)
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Question 417
waec2009
If (2x + 3)3 = 125, find the value of x
A1
B2
C3
D4
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Question 418
waec2009
If \(\frac{3}{2x} - \frac{2}{3x} = 4\), solve for x
A\(\frac{4}{5}\)
B\(\frac{4}{13}\)
C\(\frac{5}{24}\)
D\(\frac{13}{24}\)
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Question 419
waec2009
Two sets are disjoint if
Athey are both empty
Btheir union is an empty set
Ctheir intersection is an empty set
Done of them is a subset of the other
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Question 420
waec2009
Express the square root of 0.000144 in the standard form
