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Taya2010 [7]
3 years ago
8

Explain how you find it

Mathematics
1 answer:
aliina [53]3 years ago
8 0

Answer:

x = 39

Step-by-step explanation:

there is a theorem that states that the midsegment in a trapezoid is equal to the sum of the bases divided by two

so, (36 + 42)/2 = x

36 + 42 = 78

78/2 = 39

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