Respuesta :
Answer:
x = 5.25 and it is an isosceles triangle.
Step-by-step explanation:
The perimeter of a figure it the measure of all its sides added up.
Therefore RS+RT+ST=32
By substitution:
(x+7)+(2x-3)+(x+7)=32
Combine like terms and add:
4x+11=32
Subtract 11
4x=21
Divide 4
x=5.25
After substituting the value back in, we get that RS=12.25, RT=7.5, and ST=12.25
In an isosceles triangle, two sides have the same measure.
x = 5.25 and it is an isosceles triangle.
