En un parque, a cierta hora del día, se encuentra un joven de 1.86 metros de estatura que proyecta una sombra de 4.3 metros. Calcula la altura de un árbol que al mismo tiempo proyecta una sombra de 15 metros.

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis

True or false? a circle could be circumscribed about the quadrilateral below.