The native groups of the American Great Plains were typically: a.) nomadic tribes who followed the Bison herds

b.) mostly matriarchal because men were so often on the hunt

c.) highly organized and structured agricultural communities

d.) dependent on the production of maize for survival

answer; ///i believe that the correct answer is (c)odysseus journey home after the trojan

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

the correct answer is:   "   3.6 % " .

          →   the unemployment rate is:   " 3.6 % " .

explanation:

to calculate the "unemployment rate" :

the "unemployment rate"   =

  [# of people unemployed] /   [working age population]   * 100 %   ;

                =   [9 million] / [250 million]     *   100 % ;

    →     note:   the units of "million" cancel out;

                    since:   " {million} / {million} = 1 " ;

                =   (9 / 250)   * 100 %   ;

                = 0.036 * 100 % ;

                =   3.6 %

answer:   the unemployment rate is:   " 3.6 % " .