jc361791 jc361791
  • 20-04-2021
  • Mathematics
contestada

Find a formula for a geometric sequence that begins 100, 120, 144, ....

Respuesta :

gayanepoghosyan
gayanepoghosyan gayanepoghosyan
  • 20-04-2021

Answer:

[tex]b_{n} =b_{1} r^{n-1} =100*1.2^{n-1}[/tex]

Step-by-step explanation:

first number is [tex]b_{1} =100[/tex]

the cammon ratio is [tex]r=\frac{120}{100} =\frac{144}{120}=1.2[/tex]

so [tex]b_{n} =b_{1} r^{n-1} =100*1.2^{n-1}[/tex]

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