Which symbolic mapping statement correctly describes a reflection across the line y=x? A. (x, y)↦(−x, y)
B. (x, y)↦(x,−y)
C. (x, y)↦(y, x)
D. (x, y)↦(−x,−y)

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

How to use order of operation in 20 divide by 4 multiply 5 = 1

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.