Which of the following expressions represents the area of a trapezoid with bases of 3x and 5x and a height of 6x? 10x 24x 24x2 45x2

Find x to the nearest hundredth place

In two or more complete sentences, determine the appropriate model for the given data and explain how you made your decision. (1,-1), (2,0.5), (5,1.5), (8,2)

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?