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jekas [21]
3 years ago
10

What is the sum of the series?

Mathematics
1 answer:
Stells [14]3 years ago
6 0

Answer:

<h2>60</h2>

Step-by-step explanation:

\sum\limits_{i=1}^54i\to a_i=4i\\\\for\ i=1:\\\\a_1=4(1)=4\\\\for\ i=2:\\\\a_2=4(2)=8\\\\for\ i=3:\\\\a_3=4(3)=12\\\\for\ i=4:\\\\a_4=4(4)=16\\\\for\ i=5:\\\\a_5=4(5)=20\\\\\sum\limits_{i=1}^54i=4+8+12+16+20=60

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