Waec Mathematics 2010 Past Questions and Answers

Question 31:

• WAEC 2010

If the sum of the roots of the equation (x - p)(2x - 1) - 0 is 1, find the value of x

A. 1\(\frac{1}{2}\)
B. \(\frac{1}{2}\)
C. -\(\frac{3}{2}\)
D. -1\(\frac{1}{2}\)

Question 32:

• WAEC 2010

If x2 + kx + \(\frac{16}{9}\) is a perfect square, find the value of k

A. \(\frac{8}{3}\)
B. \(\frac{7}{3}\)
C. \(\frac{5}{3}\)
D. \(\frac{2}{3}\)

Question 33:

• WAEC 2010

If x km/h = y m/s, then y =

A. \(\frac{7}{18}\)x
B. \(\frac{11}{20}\)x
C. \(\frac{4}{15}\)x
D. \(\frac{5}{18}\)x

Question 34:

• WAEC 2010

The mean of the numbers 2, 5, 2x and 7 is less than or equal to 5. Find the range of the values of x

A. X \(\leq\) 3
B. X \(\geq\) 3
C. X < 3
D. X > 3

Question 35:

• WAEC 2010

In an athletic composition, the probability that an athlete wins a 100m race is \(\frac{1}{8}\) and the probability that he wins in high jump is \(\frac{1}{4}\). What is the probability that he wins only one of the events?

A. \(\frac{3}{32}\)
B. \(\frac{7}{3}\)
C. \(\frac{5}{3}\)
D. \(\frac{5}{16}\)