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3 years ago

What is the sum of the arithmetic series below?

Mathematics

1 answer:

Romashka [77]3 years ago

7 0

When we substitute the initial values of i, we find that the series is:
3, 5, 7, 9 ...
This means it is an arithmetic progression with the first term being 3 and the common difference being 2. We have to find the sum of the first 18 terms. Using the formula:

Sn = n/2[2a + (n - 1)d]
S₁₈ = 18/2[2(3) + (18 - 1)2]
S₁₈ = 360

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$\text{Hey there!}$

$\bf{\frac{2}{3}=0.6\overline{6}7}\\\\ \bf{\frac{3}{5}=0.60}$

$\text{Reason: if you use a fraction pie chart and compare}\frac{2}{3} \text{to}\frac{3}{5}, \text{you'd see that}\frac{2}{3}$ $\text{has more shaded areas than as for}\frac{3}{5}\text{has the least amount}$

$\text{Good luck on your assignment and enjoy your day!}$

~ $\frak{LoveYourselfFirst:)}$

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