Westonci.ca offers quick and accurate answers to your questions. Join our community and get the insights you need today. Our Q&A platform offers a seamless experience for finding reliable answers from experts in various disciplines. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.
Sagot :
Answer:
The 21st term is 137.
Step-by-step explanation:
Arithmetic progression:
In an arithmetic progression the difference between consecutive terms is always the same, and its called common difference.
The nth term is given by:
[tex]a_n = a_1 + (n-1)d[/tex]
In which [tex]a_1[/tex] is the first term and d is the common difference.
The first two terms are -3, 4.
This means that [tex]a_1 = -3, d = 4 - (-3) = 7[/tex]
So
[tex]a_n = a_1 + (n-1)d[/tex]
[tex]a_n = -3 + 7(n-1)[/tex]
The 21st term is
[tex]a_{21} = -3 + 7(21-1) = -3 + 140 = 137[/tex]
The 21st term is 137.
Thank you for choosing our platform. We're dedicated to providing the best answers for all your questions. Visit us again. We appreciate your time. Please come back anytime for the latest information and answers to your questions. We're dedicated to helping you find the answers you need at Westonci.ca. Don't hesitate to return for more.
