Daily Practice · Higher Plus

Daily Practice - Higher Plus

26th March 1997

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 = 3, y = 108. Work out y when x = 4.
2
The Sine Rule3 marks
In triangle ABC, angle A is 38°, side a is 9 cm and side b is 7 cm. Work out the acute angle B, to 1 decimal place.
3
Conditional Probability3 marks
A bag holds 9 red and 5 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 60 < x <= 80 has a frequency density of 2.4. How many values are in that class?
5
Bounds3 marks
A rectangle is 26 cm by 26 cm, each correct to the nearest cm. Work out the upper bound of its area.

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