You racive 9 texts in 1 min how maney texs do you get per day

What is the first step of an indirect proof of a number that is divisible by two

Use sigma notation to represent the following series for 9 terms.

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.