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andrey2020 [161]
4 years ago
9

NEED HELP ASAP ON GEOMETRY!! ONLY 3 QUESTIONS ATTACHED WITH PHOTOS. THANK YOU

Mathematics
1 answer:
ankoles [38]4 years ago
4 0
3. Look at the picture.

Use Pythagorean theorem:

x^2=3.6^2+5.5^2\\\\x^2=12.96+30.25\\\\x^2=43.21\to x=\sqrt{43.21}\\\\\boxed{x\approx6.6}


4.
Use Pythagorean theorem:

3^2+\left(\dfrac{x}{2}\right)^2=6.5^2\\\\9+\dfrac{x^2}{4}=42.25\ \ \ |-9\\\\\dfrac{x^2}{4}=33.25\ \ \ \ |\cdot4\\\\x^2=133\to x=\sqrt{133}\\\\\boxed{x\approx11.5}


5.
\widehat{AB}\ \cong\ \widehat{DE}

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