Math, asked by avicharannaik393, 1 year ago

a=7,a13=32 find d and s13

Answers

Answered by ParulG

2

heyaaa !!!!

here is your solution⬆️⬆️

hope it helps you..

#APS☺️☺️

Attachments:

shubham3179: don't know the formula lol, n/2(2a+(n-1)d)

ParulG: sorry

Answered by shubham3179

0

d=25/12
S13=253.5
As a= 7, then
a+12d=32
d=25/12

Now S13=13/2(2×7+12×25/12)
=253.5

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