A triangle is rotated 90° about the orgm, which ruta desembes the transformation (x, y) - (x, y) (x, y) - (y x) (x, y) - (- -) (x, y) - (x -x)

I've never been good at math he told he loves but he keeps cheating on me, so it ain't adding up sis

What does x = in this equation x+3+2x=x+5

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?