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dangina [55]
3 years ago
15

Find the value of x. correct answer please

Mathematics
1 answer:
liq [111]3 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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