Answer :

The Midsegment Theorem, states that a segment connecting the midpoints of two sides of a triangle, is parallel and half as long as the third side, hence:

[tex]DE=\frac{1}{2}AC[/tex]

using the formula:

[tex]\begin{gathered} AC=2\times DE \\ x=2\times6.2 \\ x=12.4 \end{gathered}[/tex]

ANSWER

x = 12.4

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