Why is it that the number of segments is always 1 greater than the number of partitions?

Empty box + box + empty box fill in the box is equal to 30 how

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

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?