Alyassa Alyassa
  • 13-11-2020
  • Mathematics
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77th term for -10,-8,-6

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sqdancefan
sqdancefan sqdancefan
  • 15-11-2020

9514 1404 393

Answer:

 142

Step-by-step explanation:

The first term of this arithmetic sequence is -10. The common difference is -8-(-10) = 2. The n-th term is ...

  an = a1 +d(n -1)

  an = -10 +2(n -1) = 2n -12

Then the 77th term is ...

  a77 = 2(77) -12 = 154 -12

  a77 = 142

The 77th term is 142.

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