A local hamburger shop sold a combined total of 567 hamburgers and cheeseburgers on Sunday. There were 67 more cheeseburgers sold than hamburgers. How many hamburgers were sold on Sunday?

Negative 5 1/12 + negative 4 1/4 + 6 3/4

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?