La desintegración de una sustancia radiactiva, XJ44, se ajusta al modelo matemático de la imagen. Donde po es la cantidad inicial de sustancia; p es la cantidad final de sustancia; y t, el tiempo transcurrido en años. Se define el tiempo medio de un productor como el tiempo necesario para que se desintegre la mitad de la sustancia de la que se dispone. Calcula el tiempo de vida medio de la sustancia XJ44.

Listed in the table is the percentage of students who chose each kind of juice at lunchtime. use the table to determine the measure of the central angle you would draw to represent orange juice in a circle graph

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?