Find the least common factor of the numbers 12 and 4

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

Hdtv screens usually have a width-to -height ratio of 16: 9. which screen dimensions are in the same proportion?

Pl e a s e h e l p! i can’t find x in #28 for my homework