Mr. Anderson is building a triangular-shaped roof for his shed. The triangle must be isosceles with its base (noncongruent) side
2 answers:
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Answer:
x = 27
Step-by-step explanation:
mean is calculated as
mean =
sum = 2 + 7 + x = 9 + x and count = 3 , then
= 12 ( multiply both sides by 3 to clear the fraction )
9 + x = 36 ( subtract 9 from both sides )
x = 27