Bisectoarele unghiurilor abc si acb , ale triunghiului abc , se interescteaza in punctul i se stie ca unghiul ibc congrunet cu icb , bic=130 grade calculati masura unghiurilor triunghiului abc

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)