Question

Math help? Its 9th grade math.

Answer 1

Hewro!

Answer:

3 x 1/2

:)

Answer 2

`\bf n^(th)\textit{ term of a geometric sequence}\\\\ a_n=a_1\cdot r^(n-1)\qquad \begin{cases} n=n^(th)\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio} \end{cases}\\\\ -------------------------------\\\\ a_1=3\qquad a_n=\left( (1)/(2) \right)a_(n-1)\impliedby \begin{array}{llll} \textit{simply means, to get the next term}\\ \textit{you multiply the previous, }a_(n-1),~by~(1)/(2)\\ meaning\qquad r=(1)/(2) \end{array} \\\\\\ a_n=3\cdot \left( (1)/(2) \right)^(n-1)`