Exercice 4 pour avoir 20 :) Les hypothèses sont les suivantes : les longueurs OA et OC sont égales; les longueurs OB et OD sont égales; I est le milieu du segment [DA] et l'angle COA [ est droit. Montrer que les droites (OI) et (CB) sont perpendiculaires.

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

On a piece of paper graph f(x)=5•(0.4)^x

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds