Is the first term and last term of an ap are 17 and 350 the common difference is 7 find the number of terms in AP
Answers
Answered by
2
Answer:
Step-by-step explanation:
a=7
an=350
d=7
n=?
an=a+(n-1)d
350=7+(n-1)7
350-7=(n-1)7
343=(n-1)7
343/7=(n-1)
49=n-1
49+1=n
50=n
Answered by
0
Answer:
Step-by-step explanation:
an=a+(n-1)d
350=17+(n-1)7
350=17+7n-7
350=7n-10
350+10=7n
360÷7=n
N=51.4
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