1 oto đi từ A đến B với vận tốc trung bình 50km/h. Khi từ B về A xe đi với vận tốc 60km/h nên thời gian về ít hơn thời gian đi 30’. Tính độ dài quãng đường AB

Nine more than four times a number is the same as one less than twice the number. find the number?

Ineed with this problem 21 show steps

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?