Find the common difference of the arithmetic sequence -7, -3.5, 0, 3.5

Question 5 spring semester final exam math evaluate

How do you convert 1.27 to a percentage

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