If \(x\) and \(y\) are positive, is \(\sqrt{x+y}>10?\)

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If \(x\) and \(y\) are positive, is \(\sqrt{x+y}>10?\)

(1) \(\dfrac{\sqrt{x}}2+\dfrac{\sqrt{y}}2>5\)

(2) \(\sqrt{4x}>20\)

Answer: B

Source: Veritas Prep