Waec Mathematics 2005 Past Questions and Answers

Question 11:

• WAEC 2005

In the diagram, PR is a diameter, ∠PRQ = (3x-8)^o and ∠RPQ = (2y-7)^o. s x in terms of y

A. \(x=\frac{75-2y}{3}\)
B. \(x=\frac{105-3y}{2}\)
C. \(x=\frac{105-2y}{3}\)
D. \(x=\frac{75-3y}{2}\)

Question 12:

• WAEC 2005

Convert 101101_two to a number in base ten

A. 61
B. 46
C. 45
D. 44

Question 13:

• WAEC 2005

Solve the equation \(2^7 = 8^{5-x}\)

A. \(\frac{5}{8}\)
B. \(\frac{8}{3}\)
C. \(\frac{3}{2}\)
D. \(\frac{15}{4}\)

Question 14:

• WAEC 2005

expand (2x-3y)(x-5y)

A. \(2x^2 + 13xy - 15y^2\)
B. \(2x^2 - 13xy - 15y^2\)
C. \(2x^2 + 13xy + 15y^2\)
D. \(2x^2 - 13xy + 15y^2\)

Question 15:

• WAEC 2005

Make f the subject of the relation \(v = u + ft\)

A. \(\frac{v-u}{t}\)
B. \(\frac{u-v}{t}\)
C. \(t(v+u\)
D. \(\frac{v}{u}-t\)