Rewrite the expression below using the Associative Property of Multiplication: (ab)c

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?