The half-life of a radioactive kind of iodine is 12 hours. how much will be left after 36 hours if you start with 832 grams of it

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

I’m confused on how to work the pie charts

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?