What is the probability that a random teacher from the high school is older than 45 years old?

What is a rational number between 9.5 and 9.7

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

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