Find the 12th term of the geometric sequence 9,27,81

1594323

Step-by-step explanation:

T base n = ar power n - 1 is the formula of geometric progression , so :

(a= first term , r= second term divide with the first term and n= the term that you want to find)

So:

a=9 r=27÷9 n=12

=3

T base 12 = 9 (3) power 12-1

=1594323

ratio is 2 : 9

the answer is three

13.5 : 3

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%