PLEASEE HELP FASTTT :(( Suppose point Tis between points R and V on a line. If RT = 6.3 units and RV = 13.1 units, then what is TV?

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

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?