Find the perimeter of the triangle to the right

PLEASE HELP ME!!

What’s the range cuz i can’t find it?

Factor the polynomial expression x6 – x3 – 20

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.