kyrajaudon7 kyrajaudon7
  • 16-03-2018
  • Mathematics
contestada

what is the 30th term of the arithmetic series 3, 5, 7, …?

Respuesta :

bayosanuade
bayosanuade bayosanuade
  • 02-02-2020

Answer: 61

Step-by-step explanation:

The nth term of an arithmetic sequence is calculated by :

[tex]t_{n}[/tex] = [tex]a + (n-1)d[/tex]

where :

a = first term = 5

d = common difference = 2

n = number of terms

There, the 30th term will be

[tex]t_{30}[/tex] = [tex]a + (30-1)d[/tex]

[tex]t_{30}[/tex] = [tex]a + 29d[/tex]

[tex]t_{30}[/tex] = 3 +29(2)

[tex]t_{30}[/tex] = 3 + 58

[tex]t_{30}[/tex] = 61

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