Question

An isosceles triangle has a perimeter of 34cm . The congruent sides measure (4x-1)cm . The length of the third side is x cm . Find X

Answer 1

You know that the perimeter
P
is equal to
34
ans that it is the sum of the lengths of the three sides:
P
=
(
4
x
−
1
)
+
(
4
x
−
1
)
+
x
=
34
so:
4
x
−
1
+
4
x
−
1
+
x
=
34
isolate
x
:
9
x
=
34
+
2

9
x
=
36

x
=
36
9
=