identify the property that justifies each statement y=-5 then -5=y, 8a+4=4+8a, 12(x+4)=12x+48, 7^2.0=0, 8+(2+6)=(8+2)+6, if 3^2=9and 9=v/81 then 3^2 =v/81, -7=-7. need help please and thanks in advance.​

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)