Ortiz544
Answered

Discover answers to your most pressing questions at Westonci.ca, the ultimate Q&A platform that connects you with expert solutions. Get immediate answers to your questions from a wide network of experienced professionals on our Q&A platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

The first and last terms of a 10-term arithmetic series are listed in the table. What is the sum of the series?


Term Number Term
1 3
10 75

Sagot :

naǫ
The sum of an arithmetic series:
[tex]S_n=\frac{n(a_1+a_n)}{2}[/tex]

[tex]a_1=3 \\ a_{10}=75 \\ \\ S_{10}=\frac{10(a_1+a_{10})}{2}=\frac{10(3+75)}{2}=5(3+75)=5 \times 78=390[/tex]

The sum of the series is 390.
Thank you for your visit. We are dedicated to helping you find the information you need, whenever you need it. Thank you for your visit. We're dedicated to helping you find the information you need, whenever you need it. We're here to help at Westonci.ca. Keep visiting for the best answers to your questions.