Foundation Plus
10th April 1986
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 4x^2 - 11.
- 2Speed and Density2 marks
A block has volume 80 cm^3 and density 7.5 g/cm^3. Work out its mass.
- 3Angles in Parallel Lines2 marks
Two parallel lines are crossed by a straight line. One of a pair of alternate angles is 114°. Work out the other, and give a reason.
- 4Probability Trees3 marks
A bag holds 10 red and 2 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 3 households own 1 car, 2 own 2 cars and 8 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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