Answer:
12
Step-by-step explanation:
You are given two lines, the blue one and the one with the letters and are told to find the length of <em>UV</em><em> </em>(which would just be from point U to point V)
The blue line seems to represent the total length of the black line and the length of <em>VW</em><em> </em>is already shown. Since the total length is 16 and we alredy know that VW is 4, we'll subtract the two to find the length of UV
Which would be: 16-4=12
An equilateral triangle have 3 congruent sides.
Divide the total (15x +3) by 3
(15x + 3)/3 = 5x + 1
Each side's length is 5x + 1
hope this helps
