Waec Mathematics Past Questions For Year 2017
Question 41
The average age of a group of 25 girls is 10year. If one girl, aged 12 years and 4 months joins the group, find the new average age of the group
- A. 10.1 years
- B. 9.3 years
- C. 8.7 years
- D. 8 . 3 years
Question 42
Given that cos 30\(^o\) = sin 60\(^o\) = \(\frac{3}{2}\) and sin 30\(^o\) = cos 60\(^o\) = \(\frac{1}{2}\), evaluate \(\frac{tan 60^o - q}{1 - tan 30^o}\)
- A. \(\sqrt{3 - 2}\)
- B. 2 - \(\sqrt{3}\)
- C. \(\sqrt{3}\)
- D. -2
Question 43
A bearing of 320\(^o\) expressed as a compass bearing is
- A. N 50\(^o\) W
- B. N 40\(^o\) W
- C. N 50\(^o\) E
- D. N 40\(^o\) E
Question 44
The roots of a quadratic equation are \(\frac{-1}{2}\) and \(\frac{2}{3}\). Find the equation.
- A. \(6x^2 - x + 2 = 0\)
- B. \(6x^2 - x - 2 = 0\)
- C. \(6x^2 + x - 2 = 0\)
- D. \(6x^2 + x + 2 = 0\)
Question 45
Find the 6th term of the sequence \(\frac{2}{3} \frac{7}{15} \frac{4}{15}\),...
- A. -\(\frac{1}{3}\)
- B. -\(\frac{1}{5}\)
- C. -\(\frac{1}{15}\)
- D. \(\frac{1}{9}\)
