Homework Help: arithmetic

Posted by Jane on Tuesday, October 25, 2011 at 1:10pm.

The initial term of an arithmetic sequence is 5. The eleventh term is 125. what is the common difference of the arithmetic sequence?

arithmetic - Steve, Tuesday, October 25, 2011 at 1:47pm
a = 5
a + 10d = 125

5 + 10d = 125
10d = 120
d = 12

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