In the sequence -5, -15, -45..., find the sum of the first
nine terms of the geometric sequence.
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In the sequence -5, -15, -45..., find the sum of the first
nine terms of the geometric sequence.
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Step-by-step explanation:
the nine term of the geometric sequence is -32,805
-5x3= -15
-15x3= -45
-45x3= -135
-135x3= -405
-405x3= -1,215
-1215x3= -3,645
-3,645x3= -10,935
-10,935x3= -32,895