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The first term of an arithmetic sequence is -5 , and the twelfth term is 1.7 .find the common difference
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1 vote
The first term of an arithmetic sequence is -5 , and the twelfth term is 1.7 .find the common difference

User Eyuelt
by
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1 Answer

1 vote
a=-5
a12 = 1.7

a12 = a+(n-1)d
1.7 = -5+(12-1)d

1.7+5 = 11d

6.7/11 = d
0.60 = d
User Hesam
by
5.8k points
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