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Aleksandr [31]
2 years ago
5

1. Find the sum of the series15∑ (2n-1) n-1. Show your work.​

Mathematics
1 answer:
Thepotemich [5.8K]2 years ago
8 0

\\ \rm\Rrightarrow \sum^{15}_{n=1}2n-1

\\ \rm\Rrightarrow 2(1)-1+2(2)-1\dots+2(15)-1

\\ \rm\Rrightarrow 1,3,5\dots 29

Sum of first 15 odd nos

  • n²
  • 15²
  • 225
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2) The side DE of the angle m∠ADE corresponds to the side BC of the angle m∠ABC

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