abujiabdalla abujiabdalla
  • 12-04-2021
  • Mathematics
contestada

The 9th term of arithmetic sequence is 37 and 16th term is 65 find the 100th team
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Respuesta :

unicorn3125
unicorn3125 unicorn3125
  • 15-04-2021

Answer:

          a₁₀₀ = 385

Step-by-step explanation:

The nth term of arithmetic sequence is   [tex]a_n=a_1+d(n-1)[/tex]

So:

     [tex]a_9=a_1+d(9-1)\\\\37=a_1+8d\\\\a_1=37-8d\\\\\\a_{16}=a_1+d(16-1)\\\\65=a_1+15d\\\\65=37-8d+15d\\\\28=7d\\\\d=4\\\\a_1=37-8\cdot4=5\\\\\\a_{100}=a_1+d(100-1)=5+4\cdot95=385[/tex]

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