Of the 38 plays attributed to a​ playwright, 11 are​ comedies, 15 are​ tragedies, and 12 are histories. If one play is selected at​ random, find the odds against selecting a tragedy or a histories

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.)

Ihave trouble finding the nth term of a linear sequence

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need