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Find DE. A.4 B.5/3 C.7 D.11

Find DE. A.4 B.5/3 C.7 D.11-example-1
User Nenad
by
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1 Answer

1 vote

Answer:

DE = 11

Explanation:

DE = x + 7

EF = 7

DF = 4x + 2

DF = DE + EF (segment addition postulate)

Substitute

4x + 2 = x + 7 + 7

4x + 2 = x + 14

Collect like terms

4x - x = -2 + 14

3x = 12

Divide both sides by 3

x = 12/3

x = 4

✔️DE = x + 7

Plug in the value of x

DE = 4 + 7

DE = 11

User Edijae Crusar
by
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