Drag the tiles to the boxes to form correct pairs. Polygon ABCD is rotated 90º counterclockwise about the origin to create polygon A′B′C′D′. Match each set of coordinates to the vertices of polygon A′B′C′D′. A′ (-1, 3) B′ (-2, 2) C′ (-2, 1) D′ (-1, 1) arrowBoth arrowBoth arrowBoth arrowBoth Reset Next

Sketch one cycle if the cosine function y=2cos2theta

Ineed me i stuck and i don’t want to get it wrong

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?