I have to analyze bales of clothes to assess the material composition (cotton, wool, silk...). The bales weigh 480kg and I want to know what is the representative sample since I cannot analyze all the entires bales. I have been considering using a sample size formula for finite population, but all of the examples that I have read are made for surveys, and I am not sure if the sample size formula for finite populations is applicable to my study. Does someone has a solution? :)

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.