exam Maths Puzzle Numerical Ability

can you help me solve this equation for x?

25x^2=13

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exam Other Question

A toy is assembled from 3 parts.If the probability that each part is defected is 0.1.Calculate the probability that the toy is defective. Find the capital gain or loss from buying and selling 700 shares at the given prices. Round all money amounts to the nearest penny. Ignore the effect of brokerage commissions.
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