ERROR ANALYSIS Describe the error in solving for one of the variables in the linear system 5x – 7y = 16 and x + 7y=8.

This is about circle theorems. someone asap : (

Find the missing dimension! need asap! tiny square is a =3025 in ²

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.