PLEASE HELP Explain how the associative property can be used to solve this problem. 4/5 divided by 3/7 x 5/16

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?