When we write vectors as matrices, we tend to write an $n$-dimensional vector vector as $n \times 1$ column matrix. We emphasize that the gradient vector is defined only for scalar-valued functions. For vector valued functions, we will stick with viewing the derivative as a matrix.
Gloomy Addiction Relapse Statistics. Drug and alcohol rehab statistics show that the percentage of people who will relapse after a period recovery ranges from 50% to 90%. This is a frightening statistic and it is often used as justification for those who wish to carry on with their addiction.
For the last five years, inmates released from Florida prisons have actually served MORE than 85% of their sentences, on average. When calculating how much time an inmate will serve in prison you must first calculate 85% of his or her sentence, and then subtract any county jail time already served.