Asurvey asked 60 randomly chosen students if they eat school lunch. forty said yes. there were 560 school lunches sold today. predict the number of students who attend the school.

Which of the binomials below is a factor of this exression? 16x^2+40xy+25y^2 a.4x-5y b. 2x-5y c.4x+5y d.2x+5y

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?

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.