exam Maths Puzzle Numerical Ability

x^3 + 3 divided by x

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exam Other Question

2x+3y=24
y+7x=46

Im stuck from the very begining... A right pyramid has a square base that measures 10cm on each side. It's peak is 12cm above the center of it's base. What is the sum of the lengths of the pymramid's eight edges? Ex