encontrar la longitud de los lados de un triangulo isosceles sabiendo que el perimetro es igual a 60m y que el lado desigual mide el doble mas 4m que uno de los lados iguales

What are different types of statistical programs

Which value of y will make the inequality y< -1 false?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?