Plzzz helpp 10 pts 7 (5j + 5 + 3j)
Use the distributive property to create an equivalent expression.

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?

Explain how you could use the interactive table to tell if sets of points are on the same line. math 8

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.