Find the following arc measure

Is it true or false i’m trying to pass this test so i can leave school

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5