On interval 0<=x<2 pi, where are the x-intercepts of y= cos (2x)? A

pi/2 and 3pi/2

B

0, pi, and 2 pi

C

pi/2, pi , and 3pi/2

D

pi/4, 3pi/4, 5 pi/4, and 7pi/4

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score