In which triangle is the value of x equal to tan--( 3.2/5.12) (Images may not be drawn to scale.) the number cut off on the top says 3.1 and the number cut off on the bottom says 5.12 (couldn’t fit it all in the pic)

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

Sketch one cycle if the cosine function y=2cos2theta