Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
9th December 2021
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 4, y = 192. Work out y when x = 2.
- 2The Cosine Rule3 marks
A triangle has sides 23 cm, 11 cm and 14 cm. Work out the angle opposite the 23 cm side, to 1 decimal place.
- 3Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 3/5. Work out n.
- 4Histograms3 marks
On a histogram the bar for 30 < x <= 50 has a frequency density of 2.4. How many values are in that class?
- 5Surds3 marks
Simplify sqrt(50) + sqrt(18), giving your answer in the form a sqrt(b).
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