Daily Practice - Higher Plus
3rd April 1994
- 1Bounds3 marks
x = 78 and y = 39, each correct to the nearest whole number. Work out the upper bound of x - y.
- 2Proof2 marks
In an algebraic proof, how would you write the next even number after 2n in terms of an integer n?
- 3Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 4, y = 192. Work out y when x = 2.
- 4Finding the Area of Any Triangle3 marks
A triangle has sides of 7 cm and 14 cm and an area of 24.50 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 5Probability Equation Questions3 marks
A bag holds 8 counters, r of them red. Two are taken without replacement and P(both red) = 15/28. Work out r.
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