Asked by Victor
If the first term of an arithemetic progression is -4 and the twelveth term is 8,find the common difference.
Answers
Answered by
Reiny
a = -4
a + 11d = 8
replace a with -4 in the 2nd equation and solve for d
a + 11d = 8
replace a with -4 in the 2nd equation and solve for d
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