hai người bạn đi chơi ném vòng vào cổ chai trong 1 khu trò chơi , mỗi bạn ném 1 vòng , tỉ lệ ném vòng vào cổ chai của 2 bạn lần lượt là 0,4 và 0,6 .Tính xác suất cả 2 bạn ném được vòng vào cổ chai

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.