Daily Practice - Higher Plus
Grades 8-9 - exam-stretch algebra, geometry and reasoning.
19th August 2010
- 1Surds3 marks
Simplify sqrt(8) + sqrt(8), giving your answer in the form a sqrt(b).
- 2Trigonometric and Exponential Graphs2 marks
The curve y = cos x° is drawn for 0 <= x <= 360. Write down the value of y when x = 180.
- 3Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 4, y = 14. Work out y when x = 64.
- 4The Cosine Rule3 marks
A triangle has sides 9 cm, 8 cm and 6 cm. Work out the angle opposite the 9 cm side, to 1 decimal place.
- 5Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 3/10. Work out n.
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