djdiei90
djdiei90
21-10-2021
Mathematics
contestada
Does anyone know this answer??
Respuesta :
kyancy37
kyancy37
21-10-2021
81
Use the given equation and plug in the terms.
n=20
d=4
a1=5
an = 5 +(20-1)4
=5+(19)4
=5+76
=81
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