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8. Column A   Column B   .06  

8. Column A   Column B
  .06  

(A) Column A is larger
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Math - Problem Set G: Quantitative Comparisons

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Posted: 11/28/2012 03:43
Couldn't (0.036)^(1/2) also have the negative root of -0.189, making the answer (D)?
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Posted: 11/29/2012 01:51
Roma, no. The root of a real number is always a positive number. You are confusing the root operation with the solutions to the algebraic equation x^2 - .0036 = 0, which can be solved by factoring into (x+.189)(x-.189)=0
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