Leta plans to tile the kitchen floor and two bathrooms. The kitchen is 8 feet by 7 feet. The bathrooms are both 7 feet by 7 feet. How many 1-foot-square tiles does Leta need?

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?

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

What is 1.5% of 120 or what number is 1.5% of 120