Answered

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Fin find the 31st term in -3, -5, -7, -9

Sagot :

fieryanswererft

Answer:

-63

Find common difference:

  • -5 -(-3)
  • -5 + 3
  • -2

nth term:

  • a + (n-1)(d)      [where a is first term, d is common difference]
  • -3 + (n-1)(-2)
  • -3 -2n + 2
  • -2n -1

So 31st term:

  • -2(31) -1
  • -63
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