SOLUTION: If a^2b^3c > 0, which of the following statements must be true?
I. bc > 0
II. ac > 0
III. ab > 0
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Question 309042: If a^2b^3c > 0, which of the following statements must be true?
I. bc > 0
II. ac > 0
III. ab > 0
Found 2 solutions by jim_thompson5910, Alan3354:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Hint: is certainly positive for all . So divide both sides by to get .
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
a^2 > 0 since it's an even exponent.
If b^3c > 0, then bc is also > 0 since b^2 > 0
--> I bc > 0
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