If p is true and ~ q is false, then p ~ q is false. a. sometimes
b. always
c. never

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?

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

Ineed someone to me answer my question i have to have this done and knocked out