Which equation correctly applies the distributive property? 50+1.015=(50⋅1)+(50⋅0.01)+(50⋅0.005 )

−1.2⋅0.57⋅0.5=−1.2⋅0.5⋅0.57

(0.5⋅0.5)+(0.5⋅0.3)+(0.5⋅0.2)=0.5⋅( 0.5+0.3+0.2)

−2.5⋅(4⋅1.045)=(−2.5⋅4)⋅1.045

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?