Question

see the photo nd tell the right answer because i loss 2 marks in this question

Answer 1

HERE IS YOUR ANSWER...⬇⬇

$\underline{SOLUTION}$ ➡

$Given ,\\ \\ 10 \:, \: x \: ,\: 20 \: \: are \: in \: proportion \: . \\ \\ \\ To \: find : Value \: of \: \: x \\ \\ Now ,\\ \\ 10 : x = x : 20 \\ \\ = > \frac{10}{x} = \frac{x}{20} \\ \\ = > x {}^{2} = 10 \times 20 \\ \\ = > x {}^{2} = 200 \\ \\ = > x {}^{2} = 100 \times 2 \\ \\ = > x {}^{2} = (10) {}^{2} \times 2 \\ \\ = > x = \sqrt{(10) {}^{2} \times 2} \\ \\ = > x = 10 \sqrt{2} \\ \\ \\ So, \: \\ \\ The \: value \: of \: \: x \: = 10 \sqrt{2}$

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