Tracy and eric are timing how fast marbles roll down an inclined plane. they plan to do this 5 times, and then take the average time for their results. what would be best way to improve the accuracy of their data?

a. include marbles of three different colors in their investigation
b. include the average of 20 trials down the inclined plane.
c. use marbles of 10 different marbles
d. use toy cars instead of marbles

all of the following apply except for (a. excessive credit on real estate resulting in defaulted loans.

in 1819, panic swept the country due,in part, to the rapid expansion of american manufacturing during the war of 1812 and the distress caused by the post-war british competition. the rapid expansion of american farming was another factor.

explanation:

i just answered it

explanation:

as the person below or above me i agree   the tone of voice of the itnerview can very well influecne he or she to pick one more over that   the infleuncer would pick