sharnell1 sharnell1

20-09-2020
Mathematics

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E is the midpoint of DF. if DE =5x + 4 and DF =78.

E is the midpoint of DF if DE 5x 4 and DF 78 class=

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mhanifa mhanifa

20-09-2020

Answer:

x = 7

Step-by-step explanation:

Assumed it is asking to find the value of x

Given

F is midpoint of DF
DE = DF/2
DE = 5x + 4
DF = 78

Solution

5x + 4 = 78/2
5x + 4 = 39
5x = 35
x = 7

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