Math 12th grade
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math(need 2nd opinion)
1)Find a1 in a geometric series for which Sn=300,r=3,and n=4 A)15 B)15/2 C)15 D)1/15 I chose A 2)Find the sum of the infinite geometric series. Sigma sign with infinity symbol above and n=1 below. To the right 20(1/4)n1 A)25
asked by Jon on December 12, 2007 
math
1)Find a1 in a geometric series for which Sn=300,r=3,and n=4 A)15 B)15/2 C)15 D)1/15 I chose A 2)Find the sum of the infinite geometric series. Sigma sign with infinity symbol above and n=1 below. To the right 20(1/4)n1 A)25
asked by Jon on December 12, 2007 
algebra(check)
1)Find a1 in a geometric series for which Sn=300,r=3,and n=4 a.15 b.15/2 c.15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(1/4)n1 on the right side a.25 b.80/3 c.16
asked by Marissa on August 24, 2007 
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1)Find a1 in a geometric series for which Sn=300,r=3,and n=4 a.15 b.15/2 c.15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(1/4)n1 on the right side a.25 b.80/3 c.16
asked by Marissa on August 24, 2007 
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1)Find a1 in a geometric series for which Sn=300,r=3,and n=4 a.15 b.15/2 c.15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(1/4)n1 on the right side a.25 b.80/3 c.16
asked by Marissa on August 26, 2007 
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1)Find a1 in a geometric series for which Sn=300,r=3,and n=4 a.15 b.15/2 c.15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(1/4)n1 on the right side a.25 b.80/3 c.16
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Q.Determine the sum of each infinite geometric series. t_1= 8 r = 2^1/2  A.This is a divergent series because the absolute value of r is greater than 1.
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Find the sum of the infinite geometric series below, or indicate that the sum does not exist. 15+6+12/5+24/25+...
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