Answer:
2/3
Step-by-step explanation:
The sum of an infinite geometric series is
S=a¹ (1-r)
S is the sum
A1 is the first term
r is the common ratio
so All you have to do is plug in what you know and solve the resulting equation:
9=3/(1-r)
divide both sides by 3:
3=1-r
add r to both sides:
r+1/3
subtract 1/3 from both sides
r=2/3
so the ratio is 2/3
hope my answer can help☺️
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Answers & Comments
Answer:
2/3
Step-by-step explanation:
The sum of an infinite geometric series is
S=a¹ (1-r)
S is the sum
A1 is the first term
r is the common ratio
so All you have to do is plug in what you know and solve the resulting equation:
9=3/(1-r)
divide both sides by 3:
3=1-r
add r to both sides:
r+1/3
subtract 1/3 from both sides
r=2/3
so the ratio is 2/3
hope my answer can help☺️