The seventh term of an arithmetic sequence is 10.2 and the twelfth term is 17.7. What is the common difference of the arithmetic sequence? The common difference is

QUESTION POSTED AT 01/06/2020 - 04:32 PM

Answered by admin AT 01/06/2020 - 04:32 PM

7 = 10.2
12 = 17.7
Let's take 
d = 17.7 - 10.2/ 12 - 7
d =  7.5/ 5
d = 1.5
The common difference is 1.5

 
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