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There are 11 pens in a bag, 4 Green and 7 Blue. What is the probability of picking the same coloured pens?
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What is algebra used for?
Solve the following set of simultaneous equations: 3x + y = 11, 2x + y = 8
The rectangles A and B have perimeters of 94cm and 56cm as shown below (insert diagram). Rectangle A: base = 2x cm, height = 3y cm. Rectangle B: base = (x+6)cm, height = (y+4)cm. Use an algebraic method to calculate the area of each rectangle. (8 marks)
Solve 4x+y=7 and 3x+2y=9
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