Returns for the Shields Company over the last three years are shown below. What’s the standard deviation of Shields’ returns? ( Hint: This is a sample, not a complete population, so the sample standard deviation formula should be used.) Year

Return

2009

21.50%

2008

–12.50%

2007

24.20%

step-by-step explanation:

i dont get

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c