jasonlawrence609 jasonlawrence609

04-05-2018
Mathematics

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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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lironica lironica

04-05-2018

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

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