Which of the following sets of number is not a pythagorean triple?

3,4,5

10,15,20

5,12,13

7, 24, 25

Given the following statements, which is the best

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Pls! does anybody know a shortcut for answering these types of questions in the future?