By applying the segment addition postulate, the value of v = 7
DC + CE = DE
[tex]DC = 2v-15\\\\CE = 3v-8\\\\DE = 27[/tex]
[tex](2v-15) + (3v-8) = 27[/tex]
[tex]2v-15 + 3v-8 = 27[/tex]
[tex]5v - 23 = 27[/tex]
[tex]5v - 23+ 23 = 27 + 23\\\\5v = 50[/tex]
v = 10
Therefore, using the segment addition postulate, the value of v = 10
Learn more about the segment addition postulate here:
https://brainly.com/question/1721582