Mathematics Past Questions And Answers
Find the non-zero positive value of x which satisfies the equation
\(\begin{bmatrix} x & 1 & 0 \\ 1 & x & 1 \\ 0 & 1 & x \end{bmatrix}\) = 0
- A. 2
- B. √3
- C. √2
- D. 1
The histogram shows the age distribution of members of a club. What is their modal age?
- A. 44.5
- B. 42.5
- C. 41.5
- D. 40.5
A plane tiles 90km on a bearing 030° and then flies 150km due east. How far east of the starting point is the plane?
- A. 120km
- B. 165km
- C. 195km
- D. (150 + 45√3)km
Which of the following is a measure of dispersion?
- A. range
- B. percentile
- C. median
- D. quartile
Given that \(n = 10\) and \(\sum d^{2} = 20\), calculate the Spearman's rank correlation coefficient.
- A. 0.121
- B. 0.733
- C. 0.879
- D. 0.979
A force 10N acts in the direction 060° and another force 6N acts in the direction 330°. Find the y component of their resultant force.
- A. \((3 + 3\sqrt{3})N\)
- B. \((-3 + 5\sqrt{3})N\)
- C. \((5 + 3\sqrt{3})N\)
- D. \((5 + 5\sqrt{3})N\)
Find \(\frac{dy}{dx}\), if y = \(\frac{2}{3}\) x\(^3\) - \(\frac{4}{x}\)
- A. 3x2 - \(\frac{4}{x}\)
- B. 2x2 +\(\frac{4}{x^2}\)
- C. 3x2 + \(\frac{4}{x^2}\)
- D. 2x2 - \(\frac{4}{x}\)
The solution of the quadratic inequality (x3 + x - 12) ≥ 0 is
- A. x ≥ -3 or x ≤ 4
- B. x ≥ 3 or x ≥ -4
- C. x ≤ 3 or x v -4
- D. x ≥ 3 or x ≤ -4
(a) Using the trapezium rule with seven ordinates, evaluate \(\int_{0}^{3} \frac{\mathrm d x}{x^{2} + 1}\), correct to two decimal places.
(b) Using matrix method, solve \(-2x + y = 3; - x + 4y = 1\).
View Discussion (0)WAEC 2007 THEORYThe cost of renovating a 6 m square room is N540. What is the cost of renovating a 9 m square room?
- A. N1215
- B. N720
- C. N1620
- D. N810