Foundation Plus
24th August 1984
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 2x^2 - 7.
- 2Proportion2 marks
7 identical cupcakes cost £2.45. Work out the cost of 7 of the same cupcakes.
- 3Pythagoras2 marks
A right-angled triangle has a hypotenuse of 5 cm and one shorter side of 4 cm. Work out the other shorter side.
- 4Probability Trees3 marks
A bag holds 5 red and 5 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 5Averages from Frequency Tables3 marks
In a survey 6 households own 1 car, 8 own 2 cars and 6 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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