A bicycle store costs ​$3400 per month to operate. The store pays an average of ​$50 per bike. The average selling price of each bicycle is ​$90. How many bicycles must the store sell each month to break​ even?

What is the missing constant term in the perfect square that starts with x^2 -20x

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?

Given: δabc, m∠1=m∠2, d∈ ac bd = dc m∠bdc = 100º find: m∠a m∠b, m∠c