The sets i and a are given below. i={-2,1,4,5,7,8} a={-2,0,1,4,6,7}. find the union of i and a. find the intersection of i and a. write your answer using set notation(in roster form)

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

What is the length and width of a 84.5 square foot rug? will mark

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.