What. is the y intercept of a line given by the equation y=5×-21?

Landon wrote that 3−2.6=4. which statement about his answer is true?

Find the solution(s) to x^2-14+49=0

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.