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frez [133]
3 years ago
7

Find the value of n. PLEASE HELP ASAP!

Mathematics
1 answer:
inna [77]3 years ago
3 0

Answer:

d .9

Step-by-step explanation:

n^2-3 = 2×39 (line joining midpoints is half of third line )

n^2 = 78+3

n^2 =81

n =9

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