Answer:
The value of [tex]\sum_{n=3}^{8}5n[/tex] is 165.
Step-by-step explanation:
We have to evaluate sigma 5n from n=3 to 8 taht is:
[tex]\sum_{n=3}^{8}5n[/tex]
Thus, substituting the value of n from 3 to 8 in the above equation, we get
=[tex]5(3)+5(4)+5(5)+5(6)+5(7)+5(8)[/tex]
=[tex]15+20+25+30+35+40[/tex]
=[tex]165[/tex]
Thus, the value of [tex]\sum_{n=3}^{8}5n[/tex] is 165.
