Daily Practice · Higher Plus

Daily Practice - Higher Plus

6th May 1995

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 sqrt(x). When x = 9, y = 9. Work out y when x = 81.
2
The Sine Rule3 marks
In triangle ABC, angle A is 67°, side a is 13 cm and side b is 10 cm. Work out the acute angle B, to 1 decimal place.
3
Conditional Probability3 marks
A bag holds 7 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
A histogram has four 10-wide classes from 0, with frequency densities 3, 2, 0.5, 1. Which class contains the median?
5
Bounds3 marks
A car covers 570 m (to the nearest 10 m) in 4 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.

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