2 answers:
Hello,
Given two numbers a and b:
arithmetic mean =(a+b)/2
geometric mean =√(a*b)
harmonic mean :2/ (1/a + 1/b)
<span>It means that it is pertaining to a type of math or in this case Geometry, for the use of its method.
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Answer:
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Step-by-step explanation:
6.40x+9.90(154-x)=1230.90
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