Amodel airplane can be built to 1/48 of the actual size. suppose a wing of the model airplane is 3/4 ft long. how long is the wing of the full size airplane

15 point ! ~ see if you know the answer to both you!

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?

If f(x)=x+7 and g(x)=1/x what is (fog)(x)