Why is my computer taking up 70% of my memory doing nothing?

Zoomx19

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Jul 26, 2014
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Why does this happen i have 8 gigs of 2133 ram and when i do nothing it takes up a lot of ram.

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Zoomx19

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Jul 26, 2014
30
0
18,530


But why does it say im using a lot of ram when im only using like 2 gigs?