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OpenStudy (anonymous):
can somebody please help me Which of the following is the formula for the geometric sequence? 5, 35, 245, 1,715 ... an=30(7)n-1 an=7(5)n-1 an=30(5)n-1 an=5(7)n-1
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OpenStudy (anonymous):
an=5(7)n-1 because a=5 and r=7 and the formula is ar*n-1
OpenStudy (anonymous):
thankyou!:D
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