27^(-2/3)=1/((∛27)^2)
=1/3^2
=1/9
B is the value of q because you add the 4.4 and the 4.4 which u get 8.8
Let x be the value of the third term.
Since it's a geometric sequence, then:
Third term/Second term = Fourth term/Third term
x/20 = 11.25/x
Cross multiplication:
x^2 = 225
x = 15
So since the ratio is constant, then it is
x/20 = 15/20 = 3/4
So the common ratio is 3/4 or 0.75.
