exam Maths Puzzle Numerical Ability

the perimeter of a rectangle is 64cm.the length is 4 cm. less than twice the width.find the length and the width.

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exam Other Question

the sum of two numbers is 28,and there product is 7.find the sum of the reciprocals of the numbers. Find the domain and range of the quadratic equation f(x)=x^2-8x+9.