exam Maths Puzzle Numerical Ability

Suppose y varies inversely as X and Y = 5 when x = 20. Find x when y = 2

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exam Other Question

Hello and thanks for your time. My equation is 4x^4-5x^2+2x-10 divided by or / (2x-3). Thanks again! I am in need of some help

Use the ac test to determine if the following trinomial can be factored.
X^2+2x+3

Thank you