Add. Write your answer as a fraction or as a whole or mixed number. 5 5 + 10 8 8 1 / 1​

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?

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?