Which of these does not state the cosine law for angle ABC?

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Which number completes the inequality? 2/3 < _ < 7/9