In the experiment to determine if music affects concentration what would the results of the math test be considered? question 4 options: control independent variable dependent variable sample

How does specialization enable countries to trade with one another? a country can make and sell goods affordably and buy goods that it is inefficient at making. a country can make what it chooses and sell its goods to other countries. a country can decide to buy everything it needs from other countries. a country can efficiently make goods that were once difficult to make.

Which article of the us constitution addresses the issue of interpeting the laws of the united states

The following force measurements were taken during actual testing of the lever pictured. what is the ama of this lever?