What values of a and b make this statement false? |a-b|=|a|-|b|

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?

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250