Daily Practice

Higher Plus

1st February 1991

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

1
Completing the Square3 marks
Write x^2 + 14x - 7 in the form (x + a)^2 + b.
2
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 8. Work out the positive value of x when y = 72.
3
3d Pythagoras and Trigonometry3 marks
A cuboid measures 6 cm by 14 cm by 7 cm tall. Work out the angle between its longest internal diagonal and the base, to 1 decimal place.
4
Conditional Probability3 marks
A bag holds 5 red and 5 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
5
Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 2, one 5 units wide with density 3. How many values in total?

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