Which is a pair of independent events? choosing one calendar date for sports practice and then choosing a back-up date choosing one card from a deck and then choosing one card from another deck choosing a pen to write with in class and then choosing another to let a friend use choosing a first place and then a second place work of art

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Student price tickets to a movie are $1 and non student tickets are $2 . 350 tickets are sold and the total amount made is $450. there were 250 student tickets sold . true or false .

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?