For the following right triangle find the side length x

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Classify the following triangle check all that apply

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.