exam Maths Puzzle Numerical Ability

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Solve the system of equations by the Gaussian elimination method:
1. Solve the system of equations by the

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exam Other Question

if y varies inversely as x^2 and y=2 when x=4, what is the constant of variation? The width of a rectangle is 12 units less than its length. If you add 30 units to both the length and width, you double the perimeter. Find the length and width of the original rectangle.