Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
20th December 1998
- 1Bounds3 marks
x = 192 and y = 69, each correct to the nearest whole number. Work out the upper bound of x - y.
- 2Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 + 12x - 14.
- 3Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 2, y = 36. Work out y when x = 6.
- 4The Cosine Rule3 marks
A triangle has sides 20 cm, 8 cm and 16 cm. Work out the angle opposite the 20 cm side, to 1 decimal place.
- 5Probability Equation Questions3 marks
A bag holds 2 red and n blue counters. The probability of taking a red is 1/4. Work out n.
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