What is the greatest common factor of the terms in the expression 36 a + 54 a b minus 27 b? 9 9ab 18 18a

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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Aplot of land is shaped like a quadrilateral. fences are built on the diagonal to divide the area into 4 sections. what is vi to the nearest tenth? gv = 6.55fv = 5.84vh = 3.27vi = ?