Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
20th December 2019
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 2, y = 24. Work out y when x = 3.
- 2The Cosine Rule3 marks
A triangle has sides 21 cm, 15 cm and 12 cm. Work out the angle opposite the 21 cm side, to 1 decimal place.
- 3Probability Equation Questions3 marks
A bag holds 7 red and n blue counters. The probability of taking a red is 7/13. Work out n.
- 4Histograms3 marks
On a histogram the bar for 50 < x <= 55 has a frequency density of 0.4. How many values are in that class?
- 5Surds3 marks
Rationalise the denominator of 15/sqrt(5), giving your answer in its simplest form.
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