The table above shows the frequency distribution of the ages (in years) of pupils in a certain secondary school. What percentage of the total number of pupils is over 15 years but less than 21 years?
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1999
The diagram above is the graph of y = x2, the shaded area is
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1999
Find the value of l in the frustrum above
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1999
In the figure above, TZ is tangent to the circle QPZ. Find x if TZ = 6 units and PQ = 9 units
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1999
In the diagram above, EFGH is a cyclic quadrilateral in which EH//FG, EG and FH are chords. If ∠FHG = 42\(^{\circ}\) and ∠EFH = 34\(^{\circ}\), calculate ∠HEG
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1999
In the figure above, PQRS is a circle with ST//RQ. Find the value of x PT = PS.
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1999
Find the length XY in the triangle above.
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1999
The shaded portion in the graph above is represented by
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1999
The grades of 36 students in a test are shown in the pie chart above. How many students had excellent?
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1999
From a point P, the bearings of two points Q and R are N670W and N230E respectively. If the bearing of R from Q is N680E and PQ = 150m, calculate PR
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1999
Find the tangent to the acute angle between the lines 2x+y = 3 and 3x-2y = 5.
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1999
In ∆MNO, MN = 6 units, MO = 4 units and NO = 12 units. If the bisector of and M meets NO at P, calculate NP.
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1999
A man 1.7m tall observes a bird on top of a tree at an angle of 300. if the distance between the man's head and the bird is 25m, what is the height of the tree?
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1999
Find a positive value of ã if the coordinate of the centre of a circle X2+y2-2ãx+4y-ã = 0 is (ã,-2) and the radius is 4 units.
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1999
Divide 4x3-3x+1 by 2x-1
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1999
The first term of a geometric progression is twice its common ratio. Find the sum of the first two terms of the G.P if its sum to infinity is 8.
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1999
Express \(\frac{1}{X^{3}-1}\) in partial fractions
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1999
Three consecutive positive integers k, l and m are such that l2 = 3(k+m). Find the value of m
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1999
Factorize completely x2+2xy + y2+3x + 3y - 18
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1999
A binary operation * is defined by a*b = ab+a+b for any real number a and b. if the identity element is zero, find the inverse of 2 under this operation.