Question

find the common difference of the arithmetic sequence 4, 6.7, 9.4, 12.1

Answer 1

6.7 - 4 IS THE COMMON DIFFERENCE

SO,

= 6.7 - 4

= 2.7

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Answer 2

Answer:

4, 6.7, 9.4, 12.1

a2-a1 = 6.7 - 4 = 2.7

a3-a2 = 9.4 - 6.7 = 2.7

therefore, common difference d = 2.7