Daily Practice

Higher Plus

3rd March 1974

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 = 128. Work out y when x = 2.
2
The Cosine Rule3 marks
A triangle has sides of 10 cm and 15 cm with an angle of 43° between them. Work out the third side, to 1 decimal place.
3
Conditional Probability3 marks
A bag holds 4 red, 3 blue and 4 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
4
Histograms3 marks
On a histogram the bar for 30 < x <= 40 has a frequency density of 0.4. How many values are in that class?
5
Bounds3 marks
x = 177 and y = 38, each correct to the nearest whole number. Work out the upper bound of x - y.

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