Answer to Question #91866 in Algebra for Reynario ruiz jr

Question #91866

What is the next term in the geometric sequence -270, 90, -30?

Expert's answer

"b_1=-270, b_2=90, b_3=-30, b_4=?"

Common ratio: "q= \\frac {b_2} {b_1} = \\frac {90}{-270} = -\\frac{1}{3}," then

"b_4=b_3 \\cdot q=-30 \\cdot (-\\frac {1}{3})= 10"

Answer: "b_4=10"

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