Daily Practice · Higher Plus

Daily Practice - Higher Plus

2nd 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 = 162. Work out y when x = 4.
2
The Cosine Rule3 marks
A triangle has sides of 6 cm and 7 cm with an angle of 39° between them. Work out the third side, to 1 decimal place.
3
Conditional Probability3 marks
A bag holds 6 red, 3 blue and 6 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 40 < x <= 45 has a frequency density of 1.2. How many values are in that class?
5
Bounds3 marks
x = 192 and y = 50, each correct to the nearest whole number. Work out the upper bound of x - y.

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