Mathematics 2013 Waec Past Questions and Answers

Question 11 :

• WAEC 2013

Solve the inequality: \(\frac{2x - 5}{2} < (2 - x)\)

A. X > 0
B. X < \(\frac{1}{4}\)
C. X > 2\(\frac{1}{2}\)
D. X < 2\(\frac{1}{4}\)

Question 12 :

• WAEC 2013

If x = 64 and y = 27, evaluate: \(\frac{x^{\frac{1}{2}} - y^{\frac{1}{3}}}{y - x^{\frac{2}{3}}}\)

A. 2\(\frac{1}{5}\)
B. 1
C. \(\frac{5}{11}\)
D. \(\frac{11}{43}\)

Question 13 :

• WAEC 2013

If \(\frac{1}{2}\)x + 2y = 3 and \(\frac{3}{2}\)x and \(\frac{3}{2}\)x - 2y = 1, find (x + y)

A. 3
B. 2
C. 1
D. 5

Question 14 :

• WAEC 2013

Given that p^{\(\frac{1}{3}\)} = \(\frac{3\sqrt{q}}{r}\), make q the subject of the equation

A. Q = p\(\sqrt{r}\)
B. Q = p³r
C. Q = pr³
D. Q = pr^{\(\frac{1}{3}\)}

Question 15 :

• WAEC 2013

A chord is 2cm from the centre of a circle. If the radius of the circle is 5cm, find the length of the chord

A. 2\(\sqrt{21}\)cm
B. \(\sqrt{42}\)cm
C. 2\(\sqrt{19}\)cm
D. \(\sqrt{21}\)cm