Mathematics, 30.07.2019 02:30 Jenniferwolf
What is the sum of the finite arithmetic series? 7.6+6.3+5+3.7+2.4+1.1+(-0.2)+(-1.5)
Answers: 2
![S_n=\frac{n}{2}[2a+(n-1)d] \\ \\ \text{where a= first term, n=Total number of terms , d=Common diffrence}\\ \\ \text{Here we have}\\ \\ a=7.6, d=-1.3, n=8\\ \\ \text{Substitute the values in the above formula we get}\\ \\ S_8=\frac{8}{2}[2*7.6+(8-1)(-1.3)] \\ \\ S_8=4[15.2-9.1]\\](/tpl/images/0148/9167/eee6e.png)
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What is the sum of the finite arithmetic series? 7.6+6.3+5+3.7+2.4+1.1+(-0.2)+(-1.5)...
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