eggroll5 eggroll5
  • 04-05-2017
  • Mathematics
contestada

I need help with #14-20 please !

I need help with 1420 please class=

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Anny25
Anny25 Anny25
  • 04-05-2017
the 14,15 and 17 are fine, I don't understand the 16.
the 18 is 30, the 19 is 43, and 20 is 180
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