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What is the ratio of the length of an object in yards to the length of the same object in miles?

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?

What is the value of the discrimination for the quadratic equation 0=×2+2+×2