873318646
873318646
05-05-2022
Mathematics
contestada
Fin find the 31st term in -3, -5, -7, -9
Respuesta :
fieryanswererft
fieryanswererft
05-05-2022
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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