Daily Practice - Higher Plus
12th December 1996
- 1Surds3 marks
Simplify sqrt(72) + sqrt(18), giving your answer in the form a sqrt(b).
- 2Trigonometric and Exponential Graphs2 marks
The curve y = sin x° is drawn for 0 <= x <= 360. Write down the value of y when x = 0.
- 3Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 2, y = 24. Work out y when x = 4.
- 4The Cosine Rule3 marks
A triangle has sides of 7 cm and 10 cm with an angle of 87° between them. Work out the third side, to 1 decimal place.
- 5Conditional Probability3 marks
A bag holds 3 red, 4 blue and 6 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
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