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OpenStudy (anonymous):
If |a| = 9, then which are the possible values of a? A.–9 or 9 B.–9 only C.9 only
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OpenStudy (anonymous):
A. 9 or -9
OpenStudy (anonymous):
thank you
OpenStudy (anonymous):
|a| = +a for a>0 and -a for a<0
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