Find the locus of a point which moves such that the sum of its distance from point (-4,3) and (4,3) is 12 hence find: the foci ,the direntrix and the length of latus rectum

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?

Find the nonpermissible replacement for binthis expression. b2/5b +5

Factor and solve to find roots x squared -x - 90 =0