deedee102898 deedee102898
  • 18-07-2016
  • Mathematics
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Find x. Round to the nearest tenth if necessary.

Find x Round to the nearest tenth if necessary class=

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dalendrk
dalendrk dalendrk
  • 18-07-2016
Look at the picture.

Use Pythagorean theorem:

[tex]x^2+5^2=9^2\\\\x^2+25=81\ \ \ \ |subtract\ 25\ from\ both\ sides\\\\x^2=56\\\\x=\sqrt{56}\\\\\boxed{x\approx7.5}[/tex]
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