Answer:

Step-by-step explanation:
The sum of an infinite geometric series is expressed according to the formula;
where;
a is the first term of the series
r is the common ratio
If the sum of an infinite geometric series is three times the first term, this is expressed as 
Substitute
into the formula above to get the common ratio r;


open the parenthesis

subtract 3 from both sides

<em>Hence the common ratio of this series is </em>
<em></em>
1.3 pages first you take 15 * by 60 because 60 min. in one hour and then divide 1200 by 900 you get 1.3
Answer:
27π
Step-by-step explanation:
area of circle = πr^2
= π × 6^2
= 36π
36/4
= 9
36 - 9
= 27π units squared
Given:
Susan divides the fraction
by
.
Her friend Robyn divides
by
.
To find:
The quotient of Susan and Robyn.
Solution:
Susan divides the fraction
by
.



So, Susan's quotient is 10.
Her friend Robyn divides
by
.



So, Robyn's quotient is 20.
Since 20>10, therefore, Robyn will get greater quotient.
Answer:
14
4
8
Step-by-step explanation: