Answer :
In an isosceles triangle, two sides are equal in length. Let each of these equal sides have length [tex]$x$[/tex], and let the shortest side be [tex]$y$[/tex]. The perimeter of the triangle is the sum of the lengths of its three sides:
[tex]$$
y + x + x = y + 2x.
$$[/tex]
We are given that the perimeter is [tex]$7.5$[/tex] meters and the shortest side [tex]$y$[/tex] is [tex]$2.1$[/tex] meters. Substituting these values into the equation, we have:
[tex]$$
2.1 + 2x = 7.5.
$$[/tex]
This is the equation that can be used to find the value of [tex]$x$[/tex].
[tex]$$
y + x + x = y + 2x.
$$[/tex]
We are given that the perimeter is [tex]$7.5$[/tex] meters and the shortest side [tex]$y$[/tex] is [tex]$2.1$[/tex] meters. Substituting these values into the equation, we have:
[tex]$$
2.1 + 2x = 7.5.
$$[/tex]
This is the equation that can be used to find the value of [tex]$x$[/tex].