Higher Plus
12th March 1953
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 12 cm by 9 cm by 12 cm tall. Work out the angle between its longest internal diagonal and the base, to 1 decimal place.
- 2Conditional Probability3 marks
A bag holds 5 red and 4 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
- 3Histograms3 marks
A histogram has two bars: one 20 units wide with frequency density 2, one 5 units wide with density 1.4. How many values in total?
- 4Surds3 marks
Simplify sqrt(45) + sqrt(20), giving your answer in the form a sqrt(b).
- 5Transforming Graphs y=f(x)3 marks
The point (-5, 3) lies on y = f(x). Write down its image on y = -f(x).
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