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3 squared = 9 9 - 2 x 1 = 9 - 2 = 7
2xy*9 if x=3 and y = 2 2(3)(2)*9 12*9 108 You substitute x and y for their equivalent (3 and 2) then simply multiply 2*x*y, then multiply the answer of that by 9.
2/3 x 9/19 = (2 x 9)/(3 x 19) = 18/57 = 6/19.
4' 9" = 12*4 + 9 = 48 + 9 = 57" 6' 2" = 12*6 + 2 = 72 + 2 = 74" So Rosalind is 57 - 74 = - 17 inches taller.
Evaluate the following expression to 4*(12.25-4)/(9+2)