Jamb Mathematics Questions
Question 21:
Solve for (x, y) in the equation 2x + y = 4: x^2 + xy = -12
- A (6, -8): (-2, 8)
- B (3, -4): (-1, 4)
- C (8, -4): (-1, 4)
- D (-8, 6): (8, -2)
- E (-4, 3): (4, -1)
Question 22:
Solve the following equation \(\frac{2}{2r - 1}\) - \(\frac{5}{3}\) = \(\frac{1}{r + 2}\)
- A (\(\frac{5}{2}\), 1)
- B (5, -4)
- C (2, 1)
- D (1, \(\frac{-5}{2}\))
- E (\(\frac{-5}{2}\), 1)
Question 23:
Solve the simultaneous equations 2x - 3y + 10 = 10x - 6y = 5
- A X = 2\(\frac{1}{2}\), y = 3\(\frac{1}{2}\)
- B X = \(\frac{1}{2}\), y = \(\frac{3}{2}\)
- C X = 2\(\frac{1}{4}\), y = 3\(\frac{1}{2}\)
- D X = 2\(\frac{1}{3}\), y = 3\(\frac{1}{2}\)
- E X = 2\(\frac{1}{3}\), y = 2\(\frac{1}{2}\)
Question 25:
In \(\bigtriangleup\) XYZ, XY = 13cm, YZ = 9cm, XZ = 11cm and XYZ = \(\theta\). Find cos\(\theta\)o
- A \(\frac{4}{39}\)
- B \(\frac{43}{39}\)
- C \(\frac{209}{3}\)
- D \(\frac{43}{78}\)