Answer:
x = 8.5 in
The correct option is D
Explanation:
The triangle has two equal sides, hence, the unknow x divides the base, 6 in.
To find the value of x, we can take one part of the triangle as follows:
We find x as follows:
[tex]\begin{gathered} 9^2=x^2+3^2 \\ \\ x^2=9^2-3^2 \\ \\ x=\sqrt{9^2-3^2} \\ \\ =\sqrt{72}=8.5 \end{gathered}[/tex]
