kefernanda40
22.09.2019 •
Mathematics
S=n(a1+an)/2 gives the partial sum of an arithmetic sequence. what is the formula solved for an?
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Ответ:
Just took the quiz.
The answer is an=2S-a1n/n
Ответ:
2S = n(a1 + an)
2S = na1 + nan
nan = 2S - na1
an = (2S - n a1)/n
Ответ:
68°
Step-by-step explanation:
They are corresponding angles.