Foundation Plus
11th August 1990
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 3x^2 - 12.
- 2Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 3, y = 24. Work out y when x = 2.
- 3Angles in Parallel Lines2 marks
Two parallel lines are crossed by a straight line. One of a pair of alternate angles is 57°. Work out the other, and give a reason.
- 4Probability Trees3 marks
A bag holds 3 red and 4 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, 3 own 2 cars and 5 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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