Math, asked by RaphK20, 1 year ago

A Arithmetic Sequence defined by $a_{1}$ = 50 and d = -4, find the sum of the sequence from the 15th(inclusive) to the 40th term.

Answers

Answered by rima17

I tried. let me know if it's correct or not

Attachments:

sprao534: 15th term =50+14(-4)=-6

rima17: aaaaa. i did the that thing wrong !!

rima17: then. the answer will be -1456

Answered by sprao534

Please see the attachment

Attachments:

RaphK20: could you tell me what does it mean to have the term inclusive and non inclusive? Thanks for the answer by the way

sprao534: inclusive means including. that is from 15th term to 40th term

RaphK20: so, if I'm not including the 15th term, it would be a15-1?

rima17: yess

rima17: but as the question says from 14th to 50th , then we have to include 15th

rima17: btw is my answer correct ? have. you checked it ?

rima17: sorry,i didnt mean too comment here

Previous Question

Next Question