Out of 100 people , 60 like Ronaldo, 55 like Messi and 24 like Ronaldo as well as Messi. Find the number of people who like Ronaldo only and none of them

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.

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?