Math, asked by manojreddy, 1 year ago

if a =13,t15=55,find d

Answers

Answered by grishmamody10
6
tn=a+(n-1)d
for n=15
a=13
t15=13+(15-1)d
55=13+14d
55-13=14d
42=14d
42÷14=d
3=d

grishmamody10: plz mark as brainleast if u liked the answer
Answered by snehitha2
3


tn=a+(n-1)d
t15=13+(15-1)d. (n=15)
55=13+14d
14d=55-13
14d=42
d=42/14
d=3

grishmamody10: why??
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