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EastWind [94]
3 years ago
8

Point D is between Points E and F. DE = 3x + 9, DF = 12x - 1 and EF = 38. Find DE and DF.

Mathematics
1 answer:
jarptica [38.1K]3 years ago
7 0

Answer:

DE = 15

DF = 23

Step-by-step explanation:

E___D___F

EF = DE + DF

38 = (3x +9) + (12x-1)

38 = 15x + 8

15x = 38 - 8

15x = 30

x = 30/15

x = 2

DE = 3x + 9 = 3(2) + 9 = 6 + 9 = 15

DF = 12x - 1 = 12(2) - 1 = 24 - 1 = 23

I hope I helped you^_^

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