exam Maths Puzzle Numerical Ability

A rectangular pool is surrounded by a walk 4 meters wide. The pool is 6 meters longer than its width. If the total area is 576 square meters more than the area of the pool, find the dimensions of the pool.

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exam Other Question

Find the slope of the line passing through the points (10, -4) and (-4, -4).
solve the solution

y=3^(2x+1)
y=9^(4-2x)

do you make the powers = one another for 2x+1=4-2x