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Mathematics WAEC Past Questions

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566

Water flows from a tap into cylindrical container at the rate 5πcm\(^3\) per second. If the radius of the container is 3cm, calculate the level of water in the container at the end of 9 seconds.

  • A. 2cm
  • B. 5cm
  • C. 8cm
  • D. 15cm
View Answer & Discuss (4) WAEC 1999
567

Amina had m mangoes. She ate 3 and shared the remainder equally with her brother Uche. Each had at least 10. Which of the following inequalities represents the statements above.

  • A. \(\frac{m}{2}-3\le 10\)
  • B. \(\frac{m}{2}-3\ge 10\)
  • C. \(\frac{m-3}{2}\ge10\)
  • D. \(\frac{m-3}{2}\le10\)
View Answer & Discuss WAEC 1999
568

Which of the following pairs of inequalities is represented on the number line?

  • A. \(x<-2 and x\ge1\)
  • B. \(x\ge -2 and x>1\)
  • C. \(x\le -2 and x\ge1\)
  • D. \(x< -2 and x>1\)
View Answer & Discuss (4) WAEC 1999
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569

If \(x^2 +15x + 50 = ax^2 + bx + c = 0\). Which of the following statement is not true?

  • A. x = -5
  • B. x = 10
  • C. x + 10 = 0
  • D. bc = 750
View Answer & Discuss (8) WAEC 1999
570

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. \(x^2 + x(m - 2n)+2mn=0\)
View Answer & Discuss (11) WAEC 1999
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