Math, asked by jsabhinav, 8 months ago

in an ap given a13=35 a=7 find d and s13

Answers

Answered by aswinikumarsrinivas

2

Step-by-step explanation:

Sum upto 13 terms = n/2*(a+l) here l is last term i.e., a13...

S13= 13/2*(35+7)

Another formula for sum of n terms = n/2*(2a+(n-1)d). Substitute n=13, a=7 and S13= above calculated value you will get d value

Answered by kaswanbalkishan1234

0

Answer:

7/3=d

Step-by-step explanation:

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