Plz ! the line segment is reflected about the y-axis to form a'b'. which statement describes a'b'? a'b' is half the length of ab. a'b' and ab are equal in length. a'b' is greater than twice the length of ab. a'b' and ab are perpendicular.

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.

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

20 ! brainliest ! add and simplify your answer.