Waec 2005 Mathematics Past Questions And Answers
which of the following statements describes the locus of a point R which moves in a plane such that its equidistant from two intersecting lines?
- A. the bisector of the angle formed by the lines
- B. the point of intersection of the two lines
- C. A cone, with two intersecting lines as slant height
- D. A circle, with the point of intersection of the two lines as the center
What is the equation of the curve?
- A. \(y=x^2+6x+4\)
- B. \(y=x^2-5x-4\)
- C. \(y=x^2-5x+4\)
- D. \(y=x^2+5x-4\)
P = {3, 9, 11, 13} and Q = {3, 7, 9, 15} are subset of the universal set = {1, 3, 7, 9, 11, 13, 15} find PI ∩ QI
- A. {3, 9}
- B. {5, 7, 9}
- C. {1}
- D. {1, 11}
The total surface area of the walls of a room 7m long, 5m wide and xm high is 96m2. Find the value of x
- A. 2/3
- B. 2
- C. 4
- D. 8
Find the equation whose roots are 2 and \(-3\frac{1}{2}\)
- A. 2x2 + 3x + 14 = 0
- B. 2x2 + 5x + 7 = 0
- C. 2x2 + 5x - 7 = 0
- D. 2x2 + 3x - 14 = 0
A train moving at a uniform speed covers 36km in 21 minutes. How long does it take to cover 60km?
- A. 35 mins
- B. 40 mins
- C. 45 mins
- D. 90 mins
Correct 0.04945 to two significant figures
- A. 0.040
- B. 0.049
- C. 0.050
- D. 0.49
A regular polygon has 9 sides. What is the size of one of its exterior angles?
- A. 20°
- B. 40°
- C. 90°
- D. 140°
Radio waves travel in air at 3.0 x 108ms-1. If the waves enter water of refractive index \(\frac{4}{3}\), calculate the speed of radio waves in water
- A. 4.33 x 108ms-1
- B. 4.00 x 108ms-1
- C. 2.25 x 108ms-1
- D. 1.33 x 108ms-1
A sequence is given by \(2\frac{1}{2}, 5, 7\frac{1}{2}, .....\) if the nth term is 25, find n
- A. 9
- B. 10
- C. 12
- D. 15