Daily Practice

Higher Plus

15th September 1964

5 questions · 15 marks · Grades 8-9 · 51 question types in this band

1
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 4, y = 320. Work out y when x = 2.
2
The Sine Rule3 marks
In triangle ABC, angle A is 37°, side a is 16 cm and side b is 14 cm. Work out the acute angle B, to 1 decimal place.
3
Conditional Probability3 marks
A bag holds 5 red and 7 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
4
Histograms3 marks
On a histogram the bar for 0 < x <= 20 has a frequency density of 1.2. How many values are in that class?
5
Surds3 marks
Expand and simplify (4 + sqrt(7))(4 - sqrt(7)).

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