Daily Practice - Higher Plus
23rd April 1993
- 1Proof of the Circle Theorems2 marks
In a circle theorem proof, a step uses the fact that two tangents are drawn to a circle from the same external point. State the reason being quoted.
- 2Probability Equation Questions3 marks
A bag holds 9 counters, r of them red. Two are taken without replacement and P(both red) = 1/6. Work out r.
- 3Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 2, one 25 units wide with density 3. How many values in total?
- 4Surds3 marks
Rationalise the denominator of 99/sqrt(11), giving your answer in its simplest form.
- 5Algebraic Fractions3 marks
Write 2/(x + 2) + 3/(x - 3) as a single fraction.
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