Question

Help please. I will give the brainilest

Answer 1

• 31 units

Explanation:

Note: 3x + 8 is incorrect as leads to negative value for the length. Therefore changed to 3x - 8

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• DE is midsegment
• Midsegment = 1/2 Base as per definition, DE = 1/2AC

Substitute values

• 3x - 8 = 1/2(4x + 10)
• 3x - 8 = 2x + 5
• 3x - 2x = 5 + 8
• x = 13

DE = 3*13 - 8 = 31