Jean has $280 in her savings account. starting next week, she will deposit $30 in her account every week. is the amount of money in her account proportional to the number of weeks

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).

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Why is x= 4 a solution to the proportion 14/x 56/1 6