Bernard had 15 red notebooks, 17 blue notebooks and 19 white notebooks. He gave some of them to Tom and had 5 left. How
many notebooks did Bernard give Tom?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

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?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.