2 years ago

Find the value of x. correct answer please

Mathematics

1 answer:

liq [111]2 years ago

5 0

Answer:

$x = \sqrt{30}$

Step-by-step explanation:

By Geometric mean property:

$BD = \sqrt{3 \times 7} \\ BD = \sqrt{21} \\ by \: pythagoras \: theorem \\ {x}^{2} = { (\sqrt{21}) }^{2} + {(3)}^{2} \\ {x}^{2} = 21 + 9 \\ {x}^{2} = 30 \\ x = \sqrt{30}$

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