SOLUTION: find the sum 2+(-6)+18 + ......(-486)
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Question 1152056
:
find the sum 2+(-6)+18 + ......(-486)
Found 2 solutions by
MathLover1, MathTherapy
:
Answer by
MathLover1(20850)
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find the sum
+ ......
=> common ratio is
first term:
last term:
the number of terms in this sequence is:
.........
............exponents with same base, so
then, the sum of all terms is:
Answer by
MathTherapy(10552)
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Show Source
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put this solution on YOUR website!
find the sum 2+(-6)+18 + ......(-486)
A seen this is a G.P.
Sum of a G.P.:
, where:
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