Dopo aver letto il 65% delle pagine di un libro, mi rimangono da leggere 119 pagine. Quante sono complessivamente le pagine del libro

I’m stuck on this i don’t understand.

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

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?