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18-09-2019
Mathematics

contestada

If DE = 3x, EF = 2x, and DF = 10, what is DE?

Respuesta :

20-09-2019

Answer:

Step-by-step explanation:

As we know that

DF=DE+EF

by putting values

10=3x+2x

10=5x

10/5=x

2=x

now as

DE=3x

by substituting value of x

DE=3(2)

DE=6

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