Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
6th December 2012
- 1Surds3 marks
Simplify sqrt(8) + sqrt(32), giving your answer in the form a sqrt(b).
- 2Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 - 8x - 7.
- 3Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 16, y = 8. Work out y when x = 4.
- 4The Cosine Rule3 marks
A triangle has sides 12 cm, 9 cm and 15 cm. Work out the angle opposite the 12 cm side, to 1 decimal place.
- 5Probability Equation Questions3 marks
A bag holds 5 red and n blue counters. The probability of taking a red is 5/13. Work out n.
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