Seudónimo Seudónimo
  • 25-08-2016
  • Mathematics
contestada

evaluate each expression |18|
|2|+|-13|=
|-20|-|17|=

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dalendrk
dalendrk dalendrk
  • 30-08-2016
[tex]|a|= \left\{\begin{array}{ccc}a&for\ a\geq0\\-a&for\ a \ \textless \ 0\end{array}\right\\\\|2|+|-13|=2+13=15\\\\|-20|-|17|=20-17=3[/tex]
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