Waec Mathematics Past Questions
Question 1671
A car travel at x km per hour for 1 hour and at y km per hour for 2 hours. Find its average speed
- A. \(\frac{2x + 2y}{3}kmh^{-1}\)
- B. \(\frac{x + y}{3}kmh^{-1}\)
- C. \(\frac{x + 2y}{3}kmh^{-1}\)
- D. \(\frac{2x + y}{3}kmh^{-1}\)
Question 1672
Two numbers 24\(_{x}\) and 31\(_y\) are equal in value when converted to base ten. Find the equation connecting x and y
- A. 2x = 3(y - 1)
- B. 4x - y = 1
- C. 3y + 2x = 3
- D. 3y = 2 (x + 3)
Question 1673
Simplify 3.72 x 0.025 and express your answer in the standard form
- A. \(9.3\times 10^3\)
- B. \(9.3\times 10^2\)
- C. \(9.3\times 10^{-2}\)
- D. \(9.3\times 10^{-3}\)
Question 1674
The height of a pyramid on square base is 15cm. If the volume is 80cm\(^3\), find the length of the side of the base
- A. 3.3cm
- B. 5.3cm
- C. 4.0cm
- D. 8.0cm
Question 1675
The root of a quadratic equation in x, are -m and 2n. Find the equation
- A. \(x^2 + x(m - 2n)-2mn=0\)
- B. \(x^2 - x(m - 2n)-2mn=0\)
- C. \(x^2 - x(m - 2n)+2mn=0\)
- D. \(x^2 + x(m - 2n)+2mn=0\)
