What are the two solutions of the equation?
Ox= vs and x= - 5
Solve the quadratic equation by completing the square.
0 = x2 - 6x + 4
4= x2 - 6x
4+9 = (2x2 - 6x +9)
5 = (x – 3)2
x= 3+
5 and x = 3 - 5
:5+ çş andx=5 - 13
andx=-

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?