exam Maths Puzzle Numerical Ability

4. A piece of sheet metal is 2.5 times as long as it is wide. It is to be made into a box with an open top by cutting 3-inch squares from each corner and folding up the sides. L

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Use interval notation to state the domain of the function f(x)=sqrt(x+2)/x-3 A lawn(rectangular shape is to have an area of 86M.Forty metres of timber edging is available to complaetely edge the lawn.determine the lawn length and width so that all timber edging is used