exam Maths Puzzle Numerical Ability

Given a right triangle with b=4 and c=11,find a approximated to three decimal places

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exam Other Question

i need help with the problem(-2c + d)(c + 2d) multiplying polynomals by binomials A group of goats and ducks have a total of 99 heads and legs among them, there are twice as many ducks as there are goats. How many are there of each?