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If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

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?

State one method by which you can recognize a perfect square trinomial.