In the diagram below segment DEF is shown (since all three letters are shown, they are collinear). If

Mathematics

1 answer:

monitta3 years ago

3 0

Answer:

x = 4

Step-by-step explanation:

Given

DE = 3x + 2, EF = x + 5, DF = 23

As per segment addition postulate

DE + EF = DF

Substituting values:

3x + 2 + x + 5 = 23
4x + 7 = 23
4x = 16
x = 4

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