Mathematics Past Questions

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2071

Solve the simultaneous equations 2x - 3y + 10, 10x - 6y = - 5

A. x = 2\(\frac{1}{2}\), y = 5
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\(\frac{1}{2}\)

View Answer & Discuss (9) JAMB 1985

2072

If f(x - 2) = 4x² + x + 7, find f(1)

A. 12
B. 27
C. 7
D. 46
E. 17

View Answer & Discuss (1) JAMB 1985

2073

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. \(\frac{43}{78}\)

View Answer & Discuss (1) JAMB 1985

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2074

Find the missing value in the table below
\(\begin{array}{c|c} x & -4 & -3 & -2 & -1 & 0 & 1 & 2 & 3 \\ \hline y = 4 - 3x - x^3 & 80 & & 18 & 8 & 4 & 0 & -10 & -32 \end{array}\)

A. -32
B. -14
C. 40
D. 22
E. 37

View Answer & Discuss (3) JAMB 1985

2075

The number of goals scored by a football team in 20 matches is shown below
\(\begin{array}{c|c} \text{No. of goals} & 0 & 1 & 2 & 3 & 4 & 5 \\ \hline \text{No. of matches} & 3 & 5 & 7 & 4 & 1 & 0 \end{array}\)
What are the values of the mean and the mode respectively?

A. (1.75, 5)
B. (1.75, 2)
C. (1.75, 1)
D. (65, 74)

View Answer & Discuss (8) JAMB 1985

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