Waec Mathematics Past Questions and Answers

Question 1746:

• WAEC 2017

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 1747:

• WAEC 2017

Make x the subject of the relation d = \(\sqrt{\frac{6}{x} - \frac{y}{2}}\)

A. X = \(\frac{6 + 12}{d^2 + y}\)
B. X = \(\frac{12}{d^2 - y}\)
C. X = \(\frac{12}{y} - 2d^2\)
D. X = \(\frac{12}{2d^2 - y}\)

Question 1748:

• WAEC 2017

Consider the statements: p it is hot, q: it is raining
Which of the following symbols correctly represents the statement "It is raining if and only if it it is cold"?



A. P \(\iff\) \(\sim\)q
B. P \(\iff\) q
C. \(\sim\)p \(\iff\) \(\sim\)q
D. Q \(\iff\) \(\sim\)p

Question 1749:

• WAEC 2017

Given that t = \(2 ^{-x}\), find \(2 ^{x + 1}\) in terms of t.

A. \(\frac{2}{t}\)
B. \(\frac{t}{2}\)
C. \(\frac{1}{2t}\)
D. T

Question 1750:

• WAEC 2017

Two bottles are drawn with replacement from a crate containing 8 coke, 12 and 4 sprite bottles. What is the probability that the first is coke and the second is not coke?

A. \(\frac{1}{12}\)
B. \(\frac{1}{6}\)
C. \(\frac{2}{9}\)
D. \(\frac{3}{8}\)