Sumali sa IDNStudy.com at makakuha ng mga sagot sa iyong mga tanong. Makakuha ng mabilis at eksaktong sagot sa iyong mga tanong mula sa aming mga eksperto na laging handang tumulong.

Find the first term of arithmetic sequence whose 26th term is – 43 and the

common difference is – 7.​


Sagot :

Answer:

132 is the first term

Step-by-step explanation:

let's use the formula for finding terms of arithmetic sequence.

a26=a1+(n-1)d a sub 26 is given so substitute

-43=a1+(26-1)(-7) let a sub 1 as is since it is missing

-43=a1+(25)(-7)

-43=a1-175

-43+175=a1

132=a1