Question

What is the fifth term of the sequence whose first term is 10 and whose common ratio is 1/2?

Answer 1

Arithmetic or geometric sequence?

Answer 2

i think geometric :/

Answer 3

Do you multiply the first term by 1/2 to get the second term? If so, it is geometric.
The equation to find the next term in the sequence is given by:
(first term)*(Change)^(#term-1) so...
\[10*(1/2)^{5-1}= 10*(1/2)^{4}\]

Answer 4

so its 10 x 2 = 20?

Answer 5

(1/2)^4= 1/16 and 1/16 * 10= 10/16 which simplifies to 5/8

Answer 6

thanks :)

Answer 7

np