exam Maths Puzzle Numerical Ability

Simplify

6 times the square root of 7/5 - 2 times the square root of 5/7 - 3 times the square root of 140

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exam Other Question

Calculate the speed of the following:
A man runs 1000 metres in 184 seconds (calculate his speed in kiometres per hour)

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88. Business and finance. The price of an item is given by p = 2x(2nd power)-100. Find the polynomial that represents the revenue generated from the sale of x items.