![S_n=\dfrac{n}{2}[2a+(n-1)d]](/tpl/images/0685/7637/4b33c.png)
![S_{19}=\dfrac{19}{2}[2(1)+(19-1)(-3)]\\=9.5[2+18*-3]\\=9.5[2-54]\\=9.5*-52\\=-494](/tpl/images/0685/7637/7f036.png)
a) -494
Mathematics, 14.06.2020 04:57 sagetpc68741
What is the value of the arithmetic series below?
S19= 19/E/k=1 (4-3k)
a) -494
b) -104
c) -53
d) -52
Answers: 1
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You know the right answer?
What is the value of the arithmetic series below?
S19= 19/E/k=1 (4-3k)
a) -494
a) -494
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