Daily Practice

Higher Plus

17th December 1988

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

1
Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 1.2, one 10 units wide with density 3.5. How many values in total?
2
Bounds3 marks
A car covers 490 m (to the nearest 10 m) in 6 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.
3
Completing the Square3 marks
Work out the coordinates of the turning point of y = x^2 - 6x - 13.
4
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 81. Work out the positive value of x when y = 729.
5
3d Pythagoras and Trigonometry3 marks
A cuboid measures 11 cm by 5 cm by 14 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.

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