Question

determine o decimo termo de PA (2,8,14)

Answer 1

PA

r = 8 - 2 = 6 
a1 = 2
n = 10
an = a10 = ?

an = a1 + (n - 1 ) . r
a10 = 2 + ( 10 - 1 ) . 6
a10 = 2 + ( 9 ) . 6
a10 = 2 + 54
a10 = 56

PA = ( 2, 8, 14, 20, 26, 32, 38, 44, 50, 56)

Answer 2

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