XZ=n, WZ=2x-5, and the perimeter of ΔXWZ is 20. What is the value of n?
a.5
b.7
c.3
d.6

d.

Step-by-step explanation:

Since it's an isosceles triangle, WX=WZ= 2n-5

Perimeter = n + (2n-5) + (2n-5)

= 5n - 10

The Perimeter is given to be 20

5n - 10 = 20

5n = 30

n = 6

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answer: it's d

step-by-step explanation: