andrewrutherford2003 andrewrutherford2003

18-08-2020
Mathematics

contestada

If DF = 9x - 39, find EF

Respuesta :

PiaDeveau PiaDeveau

24-08-2020

Answer:

EF = 58 units

Step-by-step explanation:

Given:

DF = 9x - 39

DE = 47

EF = 3x + 10

Find:

EF

Computation:

DF = DE + EF

9x - 39 = 47 + 3x + 10

9x - 3x = 47 + 39 + 10

6x = 96

x = 16

EF = 3x + 10

EF = 3(16) + 10

EF = 58 units

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