N=3 -3 and 4+5i are zeros f(-1)=100

What is the smallest integer n such that n\sqrt{2} is greater than 20

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.

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!