If XY = 32, XZ = 30, JQ = 12, and the radius of the circumscribed circle of AXYZ is 20, find QK.

Anyone know? will mark brainliest if you're correct!

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.

The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.