exam Maths Puzzle Numerical Ability

Please multiply and simplify, if possible. all variables represent positive real numbers.

-2sqrt5x(4sqrt2x-3sqrt3)

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exam Other Question

You are to estimate the measure of the angle created by the hour and minute hands on the clocks and classify the angle as being acute, straight, right or obtuse:

1:45 Estimate: please help!

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4 + c/4y^2