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Mathematics Past Questions

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3636

(a) (i) Illustrate the following statements in a Venn diagram : All good Literature students in a school are in the General Arts class. 

(ii) Use ths diagram to determine whether or not the following are valid conclusions from the given statement.

(1) Vivian is in the General Arts class therefore she is a good Literature student.

(2) Audu is not a good Literature student therefore he is not in the General Arts class;

(3) Kweku is not in the General Arts class therefore he is not a good Literature student.

(b) The cost (c) of producing n bricks is the sum of a fixed amount, h, and a variable amount, y, where y varies directly as n. If it costs GH¢950.00 to produce 600 bricks and GH¢ 1,030.00 to produce 1000 bricks,

(i) Find the relationship between c, h and n ; (ii) Calculate the cost of producing 500 bricks.

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3637

The table is for the relation \(y = px^{2} - 5x + q\).

x -3 -2 -1 0 1 2 3 4 5
y 21 6   -12       0 13

(a)(i) Use the table to find the values of p and q.

(ii) Copy and complete the table.

(b) Using scales of 2cm to 1 unit on the x- axis and 2 cm to 5 units on the y- axis, draw the graph of the relation for \(-3 \leq x \leq 5\).

(c) Use the graph to find : 

(i) y when x = 1.8  ; (ii) x when y = -8.

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3638

(a) Using ruler and a pair of compasses only, construct a :

(i) Trapezium WXYZ such that |WX| = 8 cm, |XY| = 5.5 cm, |YZ| = 8.3 cm, < WXY = 60° and WX // ZY;

(ii) rectangle PQYZ where P and Q are on WX 

(b) Measure : (i) |QX| ; (ii) < XWZ.

View Answer & Discuss WAEC 2015
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3639

(a) The first term of an Arithmetic Progression (AP) is 8, the ratio of the 7th term to the 9th term is 5 : 8, find the common difference of the AP.

(b) A trader bought 30 baskets of pawpaw and 100 baskets of mangoes for N2,450.00. She sold the pawpaw at a profit of 40% and the mangoes at a profit of 30%. If her profit on the entire transaction was N855.00, find the (i) cost price of a basket of pawpaw ; (ii) selling price of the 100 baskets of mangoes.

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3640

(a) Without using Mathematical tables or calculators, simplify : \(\frac{2\tan 60° + \cos 30°}{\sin 60°}\)

(b) From an aeroplane in the air and at a horizontal distance of 1050m, the angles of depression of the top and base of a control tower at an instance are 36° and 41° respectively. Calculate, correct to the nearest meter, the :

(i) height of the control tower ; (ii) shortest distance between the aeroplane and the base of the control tower.

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