3) Find the sum of the first 20 terms of the arithmetic sequence 17,22,27,32,...
please need you your help Kasi kailang namin ito bukas
please need you your help Kasi kailang namin ito bukas
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Answer:
[tex]an = a1 + (n - 1)d[/tex]
Step-by-step explanation:
An=? A1=17 n=20 d=5
[tex]a20 =17 + (20 - 1)5[/tex]
[tex]a20 = 17 + (19)5[/tex]
[tex]a20= 7 + 95[/tex]
[tex]a20 = 102[/tex]