Daily Practice · Higher Plus

Daily Practice - Higher Plus

9th August 1991

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

1
Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 3/7. Work out n.
2
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?
3
Surds3 marks
Rationalise the denominator of 60/sqrt(5), giving your answer in its simplest form.
4
Factorising Harder Quadratics3 marks
Solve 2x^2 + 13x + 15 = 0.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^3. When x = 2, y = 32. Work out y when x = 5.

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