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If a1=47 and d=-5 find a12
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5 votes
If a1=47 and d=-5 find a12

User Jil
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1 Answer

6 votes
an = a1 + (n-1) * d
a12 = 47 + (12 - 1) * -5
a12 = 47 + 11 * -5
a12 = 47 - 55
a12 = - 8 <==
User Araceli
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