Daily Practice - Foundation Plus
11th February 1997
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 8x^2 - 3.
- 2Compound Interest and Depreciation3 marks
£6000 is invested at 4% compound interest per year. Work out the value after 2 years, to the nearest penny.
- 3Angles in Parallel Lines2 marks
Two parallel lines are crossed by a straight line. One of a pair of corresponding angles is 31°. Work out the other, and give a reason.
- 4Probability Trees3 marks
A bag holds 3 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 7 households own 1 car, 3 own 2 cars and 2 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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