Answer:
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Given
Triangle with:
- Base of n² -3,
- Midsegment of 39.
To find
Solution
As per definition of midsegment, it is connecting the midpoints of two sides and its length is half the length of the opposite side of the triangle.
So we have:
Solve it for n:
- n² - 3 = 78
- n² = 81
- n = √81
- n = 9
Correct choice is D.