A bicycle store costs ​$2700 per month to operate. The store pays an average of ​$60 per bike. The average selling price of each bicycle is ​$120. How many bicycles must the store sell each month to break​ even?

How many natural numbers n satisfy the inequality: 1/7 < n/10 < 4/5 ?

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.