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vickpekennah
@vickpekennah
March 2022
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quanntos termos tem a P.A. m( 3,6,9...,432)
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daisycastro
Verified answer
R = 6 - 3 = 3
a1 = 3
an = 432
n = ?
an = a1 + (n - 1) . r
432 = 3 + (n - 1) . 3
432 = 3 + 3n - 3
432 - 3 + 3 = 3n
3n = 432
n = 432/3
n = 144
A PA tem 144 termos.
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daisycastro
de nada, bons estudos!!!!!
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Lista de comentários
Verified answer
R = 6 - 3 = 3a1 = 3
an = 432
n = ?
an = a1 + (n - 1) . r
432 = 3 + (n - 1) . 3
432 = 3 + 3n - 3
432 - 3 + 3 = 3n
3n = 432
n = 432/3
n = 144
A PA tem 144 termos.