Triangles ABC and DEF are similar. Find the length of segment DF.
Find the length of segment EF.

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?

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w

Rewrite the expression in z to the n power. the expression i was given is: 1 over z to the negative 1 half power.