ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 481:

• JAMB 2008

\(\begin{pmatrix} -2 & 1 \\ 2 & 3 \end{pmatrix}\) + \(\begin{pmatrix}p & q \\ r & s\end{pmatrix}\) = \(\begin{pmatrix} 1 & 0 \\0 & 1 \end{pmatrix}\). What is the value of r?

A. -\(\frac{1}{8}\)
B. \(\frac{3}{8}\)
C. \(\frac{5}{8}\)
D. \(\frac{1}{4}\)

Question 482:

• JAMB 2009

If \(p=\sqrt{\frac{rs^3}{t}}\), express r in terms of p, s and t

A. \(\frac{p^2 t}{s^3}\)
B. \(\frac{p^3 t}{s^3}\)
C. \(\frac{p^3 t}{s^2}\)
D. \(\frac{p^ t}{s^3}\)

Question 483:

• JAMB 2009

A polynomial in x whose roots are ⁴/₃ and -³/₅ is

A. 15x² - 11x — 12
B. 15x² + 11x — 12
C. 12x² - x — 12
D. 12x² + 11x — 15

Question 484:

• JAMB 2009

Which of the following equations represent the graph above?

A. Y = 2+7x+4x²
B. Y = 2-7x+4x²
C. Y = 2+7x-4x²
D. Y = 2-7x-4x²

Question 485:

• JAMB 2009

W is directly proportional to U. If W = 5 when U = 3, find when W = 2/7

A. ⁶/₃₅
B. ¹⁰/₂₁
C. ²¹/₁₀
D. ³⁵/₆