laurenhill3623
laurenhill3623 laurenhill3623
  • 28-05-2020
  • Mathematics
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PLEASE HELP ME GUYS!!

PLEASE HELP ME GUYS class=

Respuesta :

SvetkaChem
SvetkaChem SvetkaChem
  • 28-05-2020

Answer:

n=20

Step-by-step explanation:

[tex]S_{n} =\frac{n(a_{1}+a_{n})}{2}\\\\1260 =\frac{n(25+101)}{2} \\\\n = 20[/tex]

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