Element X decays radioactively with a half life of 11 minutes. If there are 180 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 17 grams?

Abe is a triangle. can you use the sss postulate or the sas postulate to prove triangle abc = triangle aed? by sss only neither apply both apply by sas only

9/10 divide by -3/15 as a mixed number

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path