chevyonnwise57 chevyonnwise57

24-11-2020
Mathematics

contestada

What’s the 84th term of the arithmetic sequence -5, 15, 35

Respuesta :

unicorn3125 unicorn3125

26-11-2020

Answer:

a₈₄ = 1655

Step-by-step explanation:

15-(-5) = 20 and 35-15=20 so d=20

[tex]a_n=a_1+d(n-1)\\\\a_1=-5\\d=20\\\\a_{84}=-5+20(84-1)=-5+20\cdot83=-5+1660=1655[/tex]

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