A(n) = current term
a(n + 1) = next term
in a geometric sequence, the next term comes from a product of the current term and the common ratio.
the common ratio can be any value, let's say use r = ½.
if the current term is say hmmm 40, the next term is 40*½ , or 20, so indeed, the next term is smaller.
No, 0.5 = 9/18.
9/18 can be simplified to 1/2, which is 0.5
Hope this helped! :)
You change 1/3 and 3/4 so that they have the same denominator.
The GCF is 12 in this case.
1/3 x 4 = 4/12
3/4 x 3 = 9/12
4/12 + 9/12 = 13/12 or 1 1/12 (One and one twelfth)
Hope this helped !!