exam Maths Puzzle Numerical Ability

solve by graphing :
2x-y=4
2x-y=6

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exam Other Question

Given that log2^x + 2log4^y = 41
Explain why xy = 16 A picture is 10cm taller than it is wide. It is mounted on a piece of cardboard so that there is a 5cm border on all sides. If the area of the border is alone 580cm squared, what are the the dimensions of the picture?