Suppose a laboratory has 26g sample of polonium-210. the half life of polonium is about 138 days. how many half lives of polonium 210 occur in 276 days? how much polonium is is in the sample 276 days later?

The equation respenting the left table is

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?

What is 10+10+20 about the origin the square root of a triangle.