Mathematics, 02.07.2019 05:00 lolweapon
The first term of an arithmetic sequence is -5, and the tenth term is 13. find the common difference. 1. 8/9 2. 1.8 3. 2
Answers: 1
![\bf n^{th}\textit{ term of an arithmetic sequence} \\\\ a_n=a_1+(n-1)d\qquad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ d=\textit{common difference}\\[-0.5em] \hrulefill\\ a_1=-5\\ n=10\\ a_{10}=13 \end{cases} \\\\\\ a_{10}=a_1+(10-1)d\implies 13=-5+(10-1)d \\\\\\ 13=-5+9d\implies 18=9d\implies \cfrac{18}{9}=d\implies \boxed{2=d}](/tpl/images/0041/3446/8ec2e.png)
Another question on Mathematics
Mathematics, 21.06.2019 18:30
Ill mark the brainliest if you me with the these three questions 7,8,9
Answers: 2
Mathematics, 21.06.2019 18:30
Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.
Answers: 1
Mathematics, 21.06.2019 22:00
15 points what is the end behavior of this graph? & what is the asymptote of this graph?
Answers: 1
You know the right answer?
The first term of an arithmetic sequence is -5, and the tenth term is 13. find the common difference...
Questions
Physics, 08.03.2021 19:40
Mathematics, 08.03.2021 19:40
Social Studies, 08.03.2021 19:40
Advanced Placement (AP), 08.03.2021 19:40
English, 08.03.2021 19:40
Mathematics, 08.03.2021 19:40
Social Studies, 08.03.2021 19:40
