Foundation Plus
22nd December 1975
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 5x^2 - 2.
- 2Repeated Percentage Change3 marks
A town's population is 7500 and grows by 5% each year. Work out the population after 2 years, to the nearest whole number.
- 3Pythagoras2 marks
A right-angled triangle has a hypotenuse of 17 cm and one shorter side of 8 cm. Work out the other shorter side.
- 4Probability Trees3 marks
A bag holds 2 red and 9 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 8 households own 1 car, 4 own 2 cars and 6 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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