exam Maths Puzzle Numerical Ability

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sqrt 5x-2 +8=0

5x-2 under the radical(Square root)

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exam Other Question

Celsius temperatures readings can be converted to farenheit readings using the fourmula f= 9/5 C + 32. What is fareheit temperature that corresponds to each of the following celsius temperatures: -10, 0, 15, 100? solve the system
x^2+y^2=4
4x^2+9y^2=36