Formulae and Equations

MS-A1 is worth about 3 marks out of 100 in recent HSC Mathematics Standard 2 papers. Practise 4 exam-style questions (numerical answer, algebraic answer, multiple choice) with instant marking and a worked solution for every question.

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Example questions

Example 1 · 2 marks · numerical answer

The blood alcohol content (BAC) for a male is estimated by $B A C = \frac{10 N - 7.5 H}{6.8 M}$ , where $N$ is the number of standard drinks, $H$ the hours since drinking began and $M$ the mass in kg. Find the BAC for a 80 kg male who had 5 standard drinks over 3 hours, correct to three decimal places.

Example 2 · 1 mark · numerical answer

Solve $\frac{3 x - 4}{5} = 7$ .

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Formulae and Equations

Example questions

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